Revert D33284352: [jit][edge] Do not reuse mobile type parser for all unpicklers.
Test Plan: revert-hammer
Differential Revision:
D33284352 (https://github.com/pytorch/pytorch/commit/0a921ba0d066ac2acf5c930cc58d4450592adc53)
Original commit changeset: 997c4f110b36
Original Phabricator Diff: D33284352 (https://github.com/pytorch/pytorch/commit/0a921ba0d066ac2acf5c930cc58d4450592adc53)
fbshipit-source-id: af316727442a64f1ae40d53d7a9d26ec550d634e