build: remove unnecessary dependency on libs from 'all' target

The libs are added to the all target elsewhere, no need to do it
again here.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Makefile

@@ -86,7 +86,7 @@ include $(SRC_PATH)/common.mak
 FF_EXTRALIBS := $(FFEXTRALIBS)
 FF_DEP_LIBS  := $(DEP_LIBS)
 
-all: $(FF_DEP_LIBS) $(PROGS)
+all: $(PROGS)
 
 $(TOOLS): %$(EXESUF): %.o
 	$(LD) $(LDFLAGS) -o $@ $< $(ELIBS)