Remove nonexistant files from tarballs rule of Makefile

The Makefile should eventually be fixed to stop building tarballs if
one of the individual calls to tar fails.
diff --git a/Makefile b/Makefile
index 37683e0..68b5adf 100644
--- a/Makefile
+++ b/Makefile
@@ -244,7 +244,6 @@
 	$(DIRECTORY)/src/mesa/shader/descrip.mms			\
 	$(DIRECTORY)/src/mesa/shader/slang/*.[ch]			\
 	$(DIRECTORY)/src/mesa/shader/slang/descrip.mms			\
-	$(DIRECTORY)/src/mesa/shader/slang/library/*.[ch]		\
 	$(DIRECTORY)/src/mesa/shader/slang/library/*.gc			\
 	$(DIRECTORY)/src/mesa/shader/slang/library/Makefile		\
 	$(DIRECTORY)/src/mesa/swrast/*.[ch]				\
@@ -380,15 +379,6 @@
 	$(DIRECTORY)/src/glu/sgi/libtess/*.[ch]				\
 	$(DIRECTORY)/src/glu/sgi/libutil/*.[ch]
 
-MESA_GLU_FILES = \
-	$(DIRECTORY)/src/glu/mesa/README[12]		\
-	$(DIRECTORY)/src/glu/mesa/Makefile*		\
-	$(DIRECTORY)/src/glu/mesa/descrip.mms		\
-	$(DIRECTORY)/src/glu/mesa/mms_depend		\
-	$(DIRECTORY)/src/glu/mesa/*.def			\
-	$(DIRECTORY)/src/glu/mesa/depend		\
-	$(DIRECTORY)/src/glu/mesa/*.[ch]
-
 GLW_FILES = \
 	$(DIRECTORY)/src/glw/*.[ch]			\
 	$(DIRECTORY)/src/glw/Makefile*			\
@@ -451,11 +441,7 @@
 	$(DIRECTORY)/src/glut/glx/*.[ch]		\
 	$(DIRECTORY)/src/glut/beos/*.[ch]		\
 	$(DIRECTORY)/src/glut/beos/*.cpp		\
-	$(DIRECTORY)/src/glut/beos/Makefile		\
-	$(DIRECTORY)/src/glut/fbdev/Makefile		\
-	$(DIRECTORY)/src/glut/fbdev/*[ch]		\
-	$(DIRECTORY)/src/glut/mini/*[ch]		\
-	$(DIRECTORY)/src/glut/mini/glut.pc.in		\
+	$(DIRECTORY)/src/glut/beos/Makefile
 
 DEPEND_FILES = \
 	$(TOP)/src/mesa/depend		\