Remove commented out CFLAGS assigment which is also set on next line

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>

Rules.mak

@@ -526,7 +526,6 @@ endif
 
 LDFLAGS:=$(LDFLAGS_NOSTRIP) -Wl,-z,defs
 ifeq ($(DODEBUG),y)
-#CFLAGS += -g3
 CFLAGS += -O0 -g3
 else
 CFLAGS += $(OPTIMIZATION) $(XARCH_CFLAGS)