common.mk: fix dependency

* common.mk (.unicode-tables.time): should not depend on files
  which are not downloaded yet, but just the timestamp for them.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53585 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

common.mk

@@ -1025,7 +1025,7 @@ $(srcdir)/$(HAVE_BASERUBY:yes=lib/unicode_normalize/tables.rb): \
 	$(srcdir)/.unicode-tables.time
 
 $(srcdir)/.unicode-tables.time: $(srcdir)/tool/generic_erb.rb \
-		$(UNICODE_FILES) $(UNICODE_FILES_DEPS) \
+		$(UNICODE_FILES_DEPS) \
 		$(srcdir)/template/unicode_norm_gen.tmpl
 	$(Q) $(BASERUBY) $(srcdir)/tool/generic_erb.rb \
 		-c -t$@ -o $(srcdir)/lib/unicode_normalize/tables.rb \