Issue #4817: Remove unused function PyOS_GetLastModificationTime.
diff --git a/Doc/c-api/sys.rst b/Doc/c-api/sys.rst
index 7696811..f5d2ab0 100644
--- a/Doc/c-api/sys.rst
+++ b/Doc/c-api/sys.rst
@@ -15,13 +15,6 @@
    one of the strings ``'<stdin>'`` or ``'???'``.
 
 
-.. cfunction:: long PyOS_GetLastModificationTime(char *filename)
-
-   Return the time of last modification of the file *filename*. The result is
-   encoded in the same way as the timestamp returned by the standard C library
-   function :cfunc:`time`.
-
-
 .. cfunction:: void PyOS_AfterFork()
 
    Function to update some internal state after a process fork; this should be
diff --git a/Doc/data/refcounts.dat b/Doc/data/refcounts.dat
index 4d889bd..c8633c0 100644
--- a/Doc/data/refcounts.dat
+++ b/Doc/data/refcounts.dat
@@ -841,9 +841,6 @@
 PyNumber_Xor:PyObject*:o1:0:
 PyNumber_Xor:PyObject*:o2:0:
 
-PyOS_GetLastModificationTime:long:::
-PyOS_GetLastModificationTime:char*:filename::
-
 PyObject_AsFileDescriptor:int::: 
 PyObject_AsFileDescriptor:PyObject*:o:0:
 
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 83824ec..1b2bcfe 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -264,7 +264,6 @@
 		Python/getargs.o \
 		Python/getcompiler.o \
 		Python/getcopyright.o \
-		Python/getmtime.o \
 		Python/getplatform.o \
 		Python/getversion.o \
 		Python/graminit.o \
diff --git a/Misc/NEWS b/Misc/NEWS
index 4169950..f7394fd 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@
 Core and Builtins
 -----------------
 
+- Issue #4817: Remove unused function PyOS_GetLastModificationTime.
+
 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
 
 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
diff --git a/PC/VC6/pythoncore.dsp b/PC/VC6/pythoncore.dsp
index 5a89a44..756e271 100644
--- a/PC/VC6/pythoncore.dsp
+++ b/PC/VC6/pythoncore.dsp
@@ -410,10 +410,6 @@
 # End Source File

 # Begin Source File

 

-SOURCE=..\..\Python\getmtime.c

-# End Source File

-# Begin Source File

-

 SOURCE=..\..\Python\getopt.c

 # End Source File

 # Begin Source File

diff --git a/PC/VS7.1/pythoncore.vcproj b/PC/VS7.1/pythoncore.vcproj
index c2ccebb..601bfa0 100644
--- a/PC/VS7.1/pythoncore.vcproj
+++ b/PC/VS7.1/pythoncore.vcproj
@@ -569,9 +569,6 @@
 			RelativePath="..\..\Python\getcopyright.c">
 		</File>
 		<File
-			RelativePath="..\..\Python\getmtime.c">
-		</File>
-		<File
 			RelativePath="..\..\Python\getopt.c">
 		</File>
 		<File
diff --git a/PC/VS8.0/pythoncore.vcproj b/PC/VS8.0/pythoncore.vcproj
index 4720a2f..d1be268 100644
--- a/PC/VS8.0/pythoncore.vcproj
+++ b/PC/VS8.0/pythoncore.vcproj
@@ -1687,10 +1687,6 @@
 				>
 			</File>
 			<File
-				RelativePath="..\..\Python\getmtime.c"
-				>
-			</File>
-			<File
 				RelativePath="..\..\Python\getopt.c"
 				>
 			</File>
diff --git a/PC/os2emx/Makefile b/PC/os2emx/Makefile
index 9bfd927..82d548e 100644
--- a/PC/os2emx/Makefile
+++ b/PC/os2emx/Makefile
@@ -351,7 +351,6 @@
 		Python/getargs.c \
 		Python/getcompiler.c \
 		Python/getcopyright.c \
-		Python/getmtime.c \
 		Python/getplatform.c \
 		Python/getversion.c \
 		Python/graminit.c \
diff --git a/PC/os2emx/python27.def b/PC/os2emx/python27.def
index e41303d..1a258e7 100644
--- a/PC/os2emx/python27.def
+++ b/PC/os2emx/python27.def
@@ -931,9 +931,6 @@
 ; From python27_s.lib(getcopyright)
   "Py_GetCopyright"
 
-; From python27_s.lib(getmtime)
-  "PyOS_GetLastModificationTime"
-
 ; From python27_s.lib(getplatform)
   "Py_GetPlatform"
 
diff --git a/PC/os2vacpp/makefile b/PC/os2vacpp/makefile
index c75bec3..1608960 100644
--- a/PC/os2vacpp/makefile
+++ b/PC/os2vacpp/makefile
@@ -1693,8 +1693,6 @@
 	 $(PY_INCLUDE)\stringobject.h $(PY_INCLUDE)\sysmodule.h $(PY_INCLUDE)\traceback.h \
 	 $(PY_INCLUDE)\tupleobject.h
 
-getmtime.obj: pyconfig.h
-
 getplatform.obj: $(PY_INCLUDE)\abstract.h $(PY_INCLUDE)\ceval.h \
 	 $(PY_INCLUDE)\classobject.h $(PY_INCLUDE)\cobject.h $(PY_INCLUDE)\complexobject.h \
 	 pyconfig.h $(PY_INCLUDE)\dictobject.h $(PY_INCLUDE)\fileobject.h \
diff --git a/PC/os2vacpp/makefile.omk b/PC/os2vacpp/makefile.omk
index e291627..a380c03 100644
--- a/PC/os2vacpp/makefile.omk
+++ b/PC/os2vacpp/makefile.omk
@@ -1155,8 +1155,6 @@
 	 pystate.h python.h pythonrun.h rangeobject.h sliceobject.h \
 	 stringobject.h sysmodule.h traceback.h tupleobject.h
 
-getmtime.obj: pyconfig.h
-
 getplatform.obj: abstract.h ceval.h classobject.h cobject.h complexobject.h \
 	 pyconfig.h dictobject.h fileobject.h floatobject.h funcobject.h \
 	 import.h intobject.h intrcheck.h listobject.h longobject.h \
diff --git a/PC/os2vacpp/python.def b/PC/os2vacpp/python.def
index 79d05b0..ba0dfd6 100644
--- a/PC/os2vacpp/python.def
+++ b/PC/os2vacpp/python.def
@@ -284,7 +284,6 @@
                PyNumber_Xor
                PyOS_AfterFork
                PyOS_FiniInterrupts
-               PyOS_GetLastModificationTime
                PyOS_InitInterrupts
                PyOS_InterruptOccurred
                PyOS_Readline
diff --git a/PCbuild/pythoncore.vcproj b/PCbuild/pythoncore.vcproj
index 569bad7..0d3d71e 100644
--- a/PCbuild/pythoncore.vcproj
+++ b/PCbuild/pythoncore.vcproj
@@ -1687,10 +1687,6 @@
 				>
 			</File>
 			<File
-				RelativePath="..\Python\getmtime.c"
-				>
-			</File>
-			<File
 				RelativePath="..\Python\getopt.c"
 				>
 			</File>
diff --git a/Python/getmtime.c b/Python/getmtime.c
deleted file mode 100644
index 54edb53..0000000
--- a/Python/getmtime.c
+++ /dev/null
@@ -1,26 +0,0 @@
-
-/* Subroutine to get the last modification time of a file */
-
-/* (A separate file because this may be OS dependent) */
-
-#include "Python.h"
-#include "pyconfig.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-time_t
-PyOS_GetLastModificationTime(char *path, FILE *fp)
-{
-	struct stat st;
-	if (fstat(fileno(fp), &st) != 0)
-		return -1;
-	else
-		return st.st_mtime;
-}
-
-#ifdef __cplusplus
-}
-#endif
-
diff --git a/Python/import.c b/Python/import.c
index 40fc018..08024b2 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -27,8 +27,6 @@
 typedef unsigned short mode_t;
 #endif
 
-extern time_t PyOS_GetLastModificationTime(char *, FILE *);
-						/* In getmtime.c */
 
 /* Magic word to reject .pyc files generated by other Python versions.
    It should change for each incompatible change to the bytecode.
diff --git a/RISCOS/Makefile b/RISCOS/Makefile
index 1788b5c..bd63e38 100644
--- a/RISCOS/Makefile
+++ b/RISCOS/Makefile
@@ -135,7 +135,6 @@
 OBJECTS_RISCOS = \
 	@.Python.o.dynload_riscos\
 	@.Python.o.getcwd_riscos\
-	@.Python.o.getmtime_riscos\
 	@.o.unixstuff
 
 
diff --git a/RISCOS/Python/getmtime_riscos.c b/RISCOS/Python/getmtime_riscos.c
deleted file mode 100644
index 9153638..0000000
--- a/RISCOS/Python/getmtime_riscos.c
+++ /dev/null
@@ -1,20 +0,0 @@
-#include <stdio.h>
-
-#define __swi
-#include "oslib/osfile.h"
-
-long PyOS_GetLastModificationTime(char *path, FILE *fp)
-{
-  int obj;
-  bits load, exec, ftype;
-
-  if (xosfile_read_stamped_no_path(path, &obj, &load, &exec, 0, 0, &ftype)) return -1;
-  if (obj != osfile_IS_FILE) return -1;
-  if (ftype == osfile_TYPE_UNTYPED) return -1;
-
-  load &= 0xFF;
-  load -= 51;
-  if (exec < 1855548004U) load--;
-  exec -= 1855548004U;
-  return exec/100+42949672*load+(95*load)/100;
-}