Drop unnecessary av_unused attributes.

libavcodec/h264_cabac.c

@@ -1604,7 +1604,7 @@ decode_cabac_residual_internal(H264Context *h, int16_t *block,
 
     int index[64];
 
-    int av_unused last;
+    int last;
     int coeff_count = 0;
     int node_ctx = 0;
 

libavcodec/h264qpel_template.c

@@ -378,7 +378,7 @@ static void FUNC(OPNAME ## h264_qpel16_hv_lowpass)(uint8_t *dst, int16_t *tmp, c
 }\
 
 #define H264_MC(OPNAME, SIZE) \
-static av_unused void FUNCC(OPNAME ## h264_qpel ## SIZE ## _mc00)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
+static void FUNCC(OPNAME ## h264_qpel ## SIZE ## _mc00)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)\
 {\
     FUNCC(OPNAME ## pixels ## SIZE)(dst, src, stride, SIZE);\
 }\

libavcodec/rv30dsp.c

@@ -31,7 +31,7 @@
 #include "rv34dsp.h"
 
 #define RV30_LOWPASS(OPNAME, OP) \
-static av_unused void OPNAME ## rv30_tpel8_h_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, const int C1, const int C2){\
+static void OPNAME ## rv30_tpel8_h_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride, const int C1, const int C2){\
     const int h = 8;\
     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
     int i;\

libavcodec/rv40dsp.c

@@ -34,7 +34,7 @@
 #include "rv34dsp.h"
 
 #define RV40_LOWPASS(OPNAME, OP) \
-static av_unused void OPNAME ## rv40_qpel8_h_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride,\
+static void OPNAME ## rv40_qpel8_h_lowpass(uint8_t *dst, const uint8_t *src, int dstStride, int srcStride,\
                                                      const int h, const int C1, const int C2, const int SHIFT){\
     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;\
     int i;\

libavcodec/vp56.h

@@ -299,7 +299,7 @@ static av_always_inline int vp8_rac_get(VP56RangeCoder *c)
     return vp56_rac_get_prob(c, 128);
 }
 
-static av_unused int vp56_rac_gets(VP56RangeCoder *c, int bits)
+static int vp56_rac_gets(VP56RangeCoder *c, int bits)
 {
     int value = 0;
 
@@ -310,7 +310,7 @@ static av_unused int vp56_rac_gets(VP56RangeCoder *c, int bits)
     return value;
 }
 
-static av_unused int vp8_rac_get_uint(VP56RangeCoder *c, int bits)
+static int vp8_rac_get_uint(VP56RangeCoder *c, int bits)
 {
     int value = 0;