remove postinst files for preinstalled packages

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26299 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/Makefile

@@ -85,6 +85,7 @@ $(curdir)/rootfs-prepare: $(TMP_DIR)/.build
 	@-find $(TARGET_DIR) -name CVS   | $(XARGS) rm -rf
 	@-find $(TARGET_DIR) -name .svn  | $(XARGS) rm -rf
 	@-find $(TARGET_DIR) -name '.#*' | $(XARGS) rm -f
+	rm -f $(TARGET_DIR)/usr/lib/opkg/info/*.postinst
 	$(if $(CONFIG_CLEAN_IPKG),rm -rf $(TARGET_DIR)/usr/lib/opkg)
 	$(call mklibs)