Remove useless generated ChangeLog.

Makefile.am

@@ -23,11 +23,6 @@ upload-doc: doc/html FORCE
 	ssh $(webhost) rm -f '$(doxdir)/*' || true
 	scp -r doc/html/* $(webhost):$(doxdir)/
 
-update-changelog: FORCE
-	git --help >/dev/null 2>&1 \
-	  && test -d .git \
-	  && git log --stat | awk 'function flush() { if (m != "") { print "Commit: " v "\nAuthor: " a m } m=""; v="UNSUBMITTED" } { if ($$1 == "commit") flush(); else if ($$1 == "Author:") { a = $$2 } else if ($$1 == "git-svn-id:") { split($$2,tmp,"@"); v=tmp[2] } else if ($$_ != "    ") { m=m "\n" $$_ } } END { flush() }' > ChangeLog
-
 update-fonts: tools/makefont
 	tools/makefont mono9 "Monospace 9" 96 4 >| $(srcdir)/caca/mono9.data
 	tools/makefont monobold12 "Monospace Bold 12" 96 4 >| $(srcdir)/caca/monobold12.data