Resolve some unused assignments

Solves some static analysis issues.

Change-Id: Iafa4bc307db05e6ec5b4ba19ec3bf2cf297ae60c
diff --git a/av1/common/mvref_common.c b/av1/common/mvref_common.c
index 36f6cad..ef8e452 100644
--- a/av1/common/mvref_common.c
+++ b/av1/common/mvref_common.c
@@ -1152,8 +1152,6 @@
       pts[0] = (x * 8);
       pts[1] = (y * 8);
       calc_projection_samples(mbmi, x, y, pts_inref);
-      pts += 2;
-      pts_inref += 2;
       np++;
     }
   }