Remove references to src/git/config.h

It was removed in ec250c6e.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

.gitignore

 /apidocs
-/src/git/config.h
 /trash-*.exe
 *.o
 *.a

Makefile

@@ -29,7 +29,6 @@ clean:
 	rm -f src/*.o
 	rm -f tests/*.o tests/*.exe tests/*.toc
 	rm -rf trash-*.exe
-	rm -f src/git/config.h
 	rm -rf apidocs
 
 apidocs: