disable ADL for deprecated functions
disable ADL for deprecated functions

Summary: To discourage ppl from using them since `folly::Optional` is deprecated

Reviewed By: yfeldblum

Differential Revision: D22036369

fbshipit-source-id: 6fc29da3761086391f03dffc918766d45c11a864

facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift