Remove unused inter_mode_data_ref_best_rd arr
Remove unused inter_mode_data_ref_best_rd arr

Change-Id: Ibadd1a41e95c26b295dc377a42bc92738649b318

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom