Rationalize libvpx configurations

third_party/libvpx/source/config/linux/mipsel/vp8_rtcd.h

 #ifndef VP8_RTCD_H_
 #define VP8_RTCD_H_
 
 #ifdef RTCD_C
 #define RTCD_EXTERN
 #else
 #define RTCD_EXTERN extern
 #endif
 
 /*
@@ skipping 149 matching lines @@
 
 void vp8_sixtap_predict4x4_c(unsigned char *src, int src_pitch, int xofst, int yofst, unsigned char *dst, int dst_pitch);
 #define vp8_sixtap_predict4x4 vp8_sixtap_predict4x4_c
 
 void vp8_sixtap_predict8x4_c(unsigned char *src, int src_pitch, int xofst, int yofst, unsigned char *dst, int dst_pitch);
 #define vp8_sixtap_predict8x4 vp8_sixtap_predict8x4_c
 
 void vp8_sixtap_predict8x8_c(unsigned char *src, int src_pitch, int xofst, int yofst, unsigned char *dst, int dst_pitch);
 #define vp8_sixtap_predict8x8 vp8_sixtap_predict8x8_c
 
-void vp8_temporal_filter_apply_c(unsigned char *frame1, unsigned int stride, unsigned char *frame2, unsigned int block_size, int strength, int filter_weight, unsigned int *accumulator, unsigned short *count);
-#define vp8_temporal_filter_apply vp8_temporal_filter_apply_c
-
 void vp8_rtcd(void);
 
 #include "vpx_config.h"
 
 #ifdef RTCD_C
 static void setup_rtcd_internal(void)
 {
 }
 #endif
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif