VP9: Do not call vp9_adjust_mask() in vp9_setup_mask()

vp9_adjust_mask() is called again in loop_filter_rows().

Change-Id: If52f5339dfa7971c47b12f9e05f87951044d9391
diff --git a/vp9/common/vp9_loopfilter.c b/vp9/common/vp9_loopfilter.c
index 2d98e77..4614625 100644
--- a/vp9/common/vp9_loopfilter.c
+++ b/vp9/common/vp9_loopfilter.c
@@ -1072,8 +1072,6 @@
       }
       break;
   }
-
-  vp9_adjust_mask(cm, mi_row, mi_col, lfm);
 }
 
 static void filter_selectively_vert(uint8_t *s, int pitch,