common.mk: remove dl from EXT_SRCS

* common.mk (EXT_SRCS): remove dl/callback which has been removed
  at r48217.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48219 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

common.mk

@@ -922,7 +922,7 @@ common-srcs: {$(VPATH)}parse.c {$(VPATH)}lex.c {$(VPATH)}newline.c {$(VPATH)}id.
 srcs: common-srcs srcs-enc
 
 EXT_SRCS = $(srcdir)/ext/ripper/ripper.c $(srcdir)/ext/json/parser/parser.c \
-	   $(srcdir)/ext/dl/callback/callback.c  $(srcdir)/ext/rbconfig/sizeof/sizes.c
+	   $(srcdir)/ext/rbconfig/sizeof/sizes.c
 
 srcs-ext: $(EXT_SRCS)
 
@@ -1011,11 +1011,6 @@ $(srcdir)/ext/json/parser/parser.c: $(srcdir)/ext/json/parser/parser.rl
 	$(Q) $(CHDIR) $(@D) && $(exec) $(MAKE) -f prereq.mk $(MFLAGS) \
 		Q=$(Q) ECHO=$(ECHO) top_srcdir=../../.. srcdir=. VPATH=../../.. BASERUBY="$(BASERUBY)"
 
-$(srcdir)/ext/dl/callback/callback.c: $(srcdir)/ext/dl/callback/mkcallback.rb $(srcdir)/ext/dl/dl.h
-	$(ECHO) generating $@
-	$(Q) $(CHDIR) $(@D) && $(exec) $(MAKE) -f depend $(MFLAGS) \
-		Q=$(Q) ECHO=$(ECHO) top_srcdir=../.. srcdir=. VPATH=../.. RUBY="$(BASERUBY)"
-
 $(srcdir)/ext/rbconfig/sizeof/sizes.c: $(srcdir)/ext/rbconfig/sizeof/depend \
 		$(srcdir)/tool/generic_erb.rb $(srcdir)/template/sizes.c.tmpl $(srcdir)/configure.in
 	$(ECHO) generating $@