Remove an unneeded skip in skip_repeated_newmv

Performance on speed 1:
 TESTSET | AVG_PSNR | OVR_PSNR |   SSIM  |
  LOWRES |  -0.081% |  -0.082% | -0.112% |
  MIDRES |  -0.101% |  -0.100% | -0.129% |
   HDRES |  -0.122% |  -0.117% | -0.139% |

STATS_CHANGED

Change-Id: Id3b66e70f0c0f2e72f700e36c69e8268ee8e9cc9

av1/encoder/rdopt.c

diff --git a/av1/encoder/rdopt.c b/av1/encoder/rdopt.c
index 89d5ba5..84dfc29 100644
--- a/av1/encoder/rdopt.c
+++ b/av1/encoder/rdopt.c
@@ -2404,7 +2404,6 @@
                     best_rd = RDCOST(x->rdmult, best_rd_stats.rate,
                                      best_rd_stats.dist);
                     if (best_rd < ref_best_rd) ref_best_rd = best_rd;
-                    skip = 1;
                     break;
                   }
                 }