package: remove unused STRIP_DISCARD_ALL variable

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/Makefile.in

@@ -126,7 +126,6 @@ TARGET_CXX := $(CCACHE) $(TARGET_CXX)
 endif
 
 ifeq ($(BR2_STRIP_strip),y)
-STRIP_DISCARD_ALL:=--discard-all
 STRIP_STRIP_UNNEEDED:=--strip-unneeded
 STRIP_STRIP_ALL:=--strip-all
 TARGET_STRIP=$(TARGET_CROSS)strip
@@ -134,7 +133,6 @@ STRIPCMD=$(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note
 KSTRIPCMD=$(STRIPCMD) $(STRIP_STRIP_UNNEEDED)
 endif
 ifeq ($(BR2_STRIP_sstrip),y)
-STRIP_DISCARD_ALL:=
 STRIP_STRIP_UNNEEDED:=
 STRIP_STRIP_ALL:=
 TARGET_STRIP=$(HOST_DIR)/usr/bin/$(REAL_GNU_TARGET_NAME)-sstrip