Makefile: remove tracking of TCLTK_PATH

It looks like we are tracking the value of TCLTK_PATH in the main
Makefile for no good reason.

This patch removes the useless code used to do this tracking.

Maybe this code should have been moved to gitk-git/Makefile by
62ba514 (Move gitk to its own subdirectory, 2007-11-17).
A patch to do that has just been sent to Paul Mackerras, the gitk
maintainer.

While at it, this patch removes /gitk-git/gitk-wish from
.gitignore as it should be in /gitk-git/.gitignore and the patch
sent to Paul put it there.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Makefile b/Makefile
index 6b73c14..34b62fd 100644
--- a/Makefile
+++ b/Makefile
@@ -2608,18 +2608,6 @@
 	@echo GIT_PERF_MAKE_OPTS=\''$(subst ','\'',$(subst ','\'',$(GIT_PERF_MAKE_OPTS)))'\' >>$@
 endif
 
-### Detect Tck/Tk interpreter path changes
-ifndef NO_TCLTK
-TRACK_VARS = $(subst ','\'',-DTCLTK_PATH='$(TCLTK_PATH_SQ)')
-
-GIT-GUI-VARS: FORCE
-	@VARS='$(TRACK_VARS)'; \
-	    if test x"$$VARS" != x"`cat $@ 2>/dev/null`" ; then \
-		echo 1>&2 "    * new Tcl/Tk interpreter location"; \
-		echo "$$VARS" >$@; \
-            fi
-endif
-
 test_bindir_programs := $(patsubst %,bin-wrappers/%,$(BINDIR_PROGRAMS_NEED_X) $(BINDIR_PROGRAMS_NO_X) $(TEST_PROGRAMS_NEED_X))
 
 all:: $(TEST_PROGRAMS) $(test_bindir_programs)
@@ -2894,7 +2882,7 @@
 	$(MAKE) -C gitk-git clean
 	$(MAKE) -C git-gui clean
 endif
-	$(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-LDFLAGS GIT-GUI-VARS GIT-BUILD-OPTIONS
+	$(RM) GIT-VERSION-FILE GIT-CFLAGS GIT-LDFLAGS GIT-BUILD-OPTIONS
 	$(RM) GIT-USER-AGENT GIT-PREFIX GIT-SCRIPT-DEFINES
 
 .PHONY: all install profile-clean clean strip