initscripts: remove SOURCE

Now that the package infrastructure doesn't attempt to download a package
that has an empty version string, there's no need to define the SOURCE
variable in the initscripts package.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/initscripts/initscripts.mk

@@ -4,9 +4,6 @@
 #
 ################################################################################
 
-# source included in buildroot
-INITSCRIPTS_SOURCE =
-
 define INITSCRIPTS_INSTALL_TARGET_CMDS
 	mkdir -p  $(TARGET_DIR)/etc/init.d
 	$(INSTALL) -D -m 0755 package/initscripts/init.d/* $(TARGET_DIR)/etc/init.d/