Summary: Fishhook was used to try to hide the log messages from RCTReconnectingWebSocket but that doesn't really work anymore. Deleting it now to unblock people trying to build for iOS 13.
Reviewed By: cpojer
Differential Revision: D15779390
fbshipit-source-id: ef18575d5d92ac374e189b1267dee3a9befc3551