remove -fforce-addr as it to generate slightly slower code

Originally committed as revision 5665 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -405,7 +405,6 @@ ifeq ($(TARGET_ARCH_ALPHA),yes)
 OBJS += alpha/dsputil_alpha.o alpha/mpegvideo_alpha.o \
 	alpha/simple_idct_alpha.o alpha/motion_est_alpha.o
 ASM_OBJS += alpha/dsputil_alpha_asm.o alpha/motion_est_mvi_asm.o
-CFLAGS += -fforce-addr
 endif
 
 ifeq ($(TARGET_ARCH_POWERPC),yes)