Delete the metadata debug logspam

src/core/surface/call.c

@@ -880,9 +880,7 @@ void grpc_call_recv_metadata(grpc_call_element *elem, grpc_call_op *op) {
   grpc_call *call = CALL_FROM_TOP_ELEM(elem);
   grpc_mdelem *md = op->data.metadata;
   grpc_mdstr *key = md->key;
-  /* gpr_log(GPR_DEBUG, "call %p got metadata %s %s", call,
+
-          grpc_mdstr_as_c_string(md->key), grpc_mdstr_as_c_string(md->value));
-  */
   if (key == grpc_channel_get_status_string(call->channel)) {
     maybe_set_status_code(call, decode_status(md));
     grpc_mdelem_unref(md);