compel/plugins/Makefile: clean up

1. Remove .FORCE, it's not used.

2. Consolidate CFLAGS stripping into a single line.
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

compel/plugins/Makefile

-.PHONY: .FORCE
+CFLAGS		:= $(filter-out -pg $(CFLAGS-GCOV) $(CFLAGS-ASAN),$(CFLAGS))
+CFLAGS		+= -DCR_NOGLIBC -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
+CFLAGS		+= -Wp,-U_FORTIFY_SOURCE -Wp,-D_FORTIFY_SOURCE=0
 
-CFLAGS			:= $(filter-out -pg $(CFLAGS-GCOV),$(CFLAGS))
-CFLAGS			+= -DCR_NOGLIBC -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
-CFLAGS			+= -Wp,-U_FORTIFY_SOURCE -Wp,-D_FORTIFY_SOURCE=0
-CFLAGS			:= $(filter-out $(CFLAGS-ASAN),$(CFLAGS))
 PLUGIN_ARCH_DIR		:= compel/arch/$(ARCH)/plugins
 
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