Remove unnecessary rate cost setup in lv-map encoding

This won't change the coding statistics.

Change-Id: Ibe3790836c59462f830029528d88a6e615efa493

av1/encoder/encodeframe.c

@@ -5003,10 +5003,6 @@ void av1_encode_tile(AV1_COMP *cpi, ThreadData *td, int tile_row,
     av1_setup_across_tile_boundary_info(cm, tile_info);
 #endif
 
-#if CONFIG_LV_MAP
-  av1_fill_coeff_costs(&td->mb, td->mb.e_mbd.tile_ctx);
-#endif
-
   av1_crc_calculator_init(&td->mb.tx_rd_record.crc_calculator, 24, 0x5D6DCB);
 
   for (mi_row = tile_info->mi_row_start; mi_row < tile_info->mi_row_end;