message: Disallow applying TFLite delegates by default for tests that rely on TfLiteDriver so that any testing with TFLite delegate has to be explicitly specified.
diff: @@ -361,7 +361,10 @@ TfLiteDriver::TfLiteDriver(DelegateType delegate_type, bool reference_kernel)
  if (reference_kernel) {
  resolver_.reset(new ops::builtin::BuiltinRefOpResolver);
  } else {
  - resolver_.reset(new ops::builtin::BuiltinOpResolver);
  + // TODO(b/168278077): change back to use BuiltinOpResolver after zip tests
  + // are fully validated against TfLite delegates.
  + resolver_.reset(
  + new ops::builtin::BuiltinOpResolverWithoutDefaultDelegates());
  ops::builtin::BuiltinOpResolver* buildinop_resolver_ =
  reinterpret_cast<ops::builtin::BuiltinOpResolver*>(resolver_.get());
  buildinop_resolver_->AddCustom("RFFT2D",
  