[gtk+] Drop a few rules that aren't used anymore

[Matthias Clasen <matthiasc src gnome org>]

commit 5b7db8c40140173c1679a98836e99bee1478a561
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Sep 4 00:21:25 2014 -0400

    Drop a few rules that aren't used anymore
    
    These rules haven't been exercised in ages, time to drop them.

 Makefile.am  |   24 +-----------------------
 sanity_check |   56 --------------------------------------------------------
 2 files changed, 1 insertions(+), 79 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 3d9d80b..64af317 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -98,29 +98,7 @@ dist-hook:
             && cp INSTALL README $(distdir) ; \
        fi
 
-.PHONY: files release sanity snapshot ChangeLog
-
-files:
-       @files=`ls $(DISTFILES) 2> /dev/null `; for p in $$files; do \
-         echo $$p; \
-       done
-       @for subdir in $(SUBDIRS); do \
-         files=`cd $$subdir; $(MAKE) files | grep -v "make\[[1-9]\]"`; \
-         for file in $$files; do \
-           echo $$subdir/$$file; \
-         done; \
-       done
-
-release:
-       rm -rf .deps */.deps
-       $(MAKE) distcheck
-
-sanity:
-       ./sanity_check $(VERSION)
-
-
-snapshot:
-       $(MAKE) dist distdir=$(PACKAGE)-snap`date +"%Y%m%d"`
+.PHONY: ChangeLog
 
 DISTCHECK_CONFIGURE_FLAGS =            \
        --enable-gtk-doc                \