Remove RISCOS support
diff --git a/Modules/zlib/README b/Modules/zlib/README
index 758cc50..02c29d4 100644
--- a/Modules/zlib/README
+++ b/Modules/zlib/README
@@ -74,7 +74,7 @@
 - zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
   other compilers. Use "make test" to check your compiler.
 
-- gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.
+- gzdopen is not supported on BEOS and by some Mac compilers.
 
 - For PalmOs, see http://palmzlib.sourceforge.net/
 
diff --git a/Modules/zlib/example.c b/Modules/zlib/example.c
index 6c8a0ee..52bc261 100644
--- a/Modules/zlib/example.c
+++ b/Modules/zlib/example.c
@@ -13,7 +13,7 @@
 #  include <stdlib.h>
 #endif
 
-#if defined(VMS) || defined(RISCOS)
+#if defined(VMS)
 #  define TESTFILE "foo-gz"
 #else
 #  define TESTFILE "foo.gz"
diff --git a/Modules/zlib/minigzip.c b/Modules/zlib/minigzip.c
index 4524b96..7f1de49 100644
--- a/Modules/zlib/minigzip.c
+++ b/Modules/zlib/minigzip.c
@@ -41,11 +41,6 @@
 #  define unlink delete
 #  define GZ_SUFFIX "-gz"
 #endif
-#ifdef RISCOS
-#  define unlink remove
-#  define GZ_SUFFIX "-gz"
-#  define fileno(file) file->__file
-#endif
 #if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
 #  include <unix.h> /* for fileno */
 #endif
diff --git a/Modules/zlib/zutil.h b/Modules/zlib/zutil.h
index b7d5eff..34646eb 100644
--- a/Modules/zlib/zutil.h
+++ b/Modules/zlib/zutil.h
@@ -147,7 +147,7 @@
 #  define OS_CODE  0x0f
 #endif
 
-#if defined(_BEOS_) || defined(RISCOS)
+#if defined(_BEOS_)
 #  define fdopen(fd,mode) NULL /* No fdopen() */
 #endif