Adding search_site_config struct.

Change-Id: I2ad333553e673dbabcdc0f0366aea311e90849bf

vp9/encoder/vp9_block.h

@@ -20,12 +20,6 @@
 extern "C" {
 #endif
 
-// motion search site
-typedef struct {
-  MV mv;
-  int offset;
-} search_site;
-
 // Structure to hold snapshot of coding context during the mode picking process
 typedef struct {
   MODE_INFO mic;
@@ -108,10 +102,6 @@ struct macroblock {
   int skip_optimize;
   int q_index;
 
-  search_site *ss;
-  int ss_count;
-  int searches_per_step;
-
   int errorperbit;
   int sadperbit16;
   int sadperbit4;