Remove an unneeded continue in cnn.c

BUG=aomedia:2685

Change-Id: Ic0dc822e557910edafa8102aa7c0ca905812e05f
diff --git a/av1/encoder/cnn.c b/av1/encoder/cnn.c
index 5d8a236..29fc87d 100644
--- a/av1/encoder/cnn.c
+++ b/av1/encoder/cnn.c
@@ -785,7 +785,6 @@
                   const int jj =
                       CLAMPINDEX(w / layer_config->skip_width, in_width);
                   assert(ii >= 0 && ii < in_height && jj >= 0 && jj < in_width);
-                  continue;
                   sum += layer_config->weights[off] *
                          input[k][ii * in_stride + jj];
                 }