Cut py cpp2 codegen of hash and equal_to
Cut py cpp2 codegen of hash and equal_to

Summary: [Thrift] Cut py `cpp2` codegen of hash and equal_to, as this generated code is no longer used.

Reviewed By: jmswen, stevegury

Differential Revision: D9003197

fbshipit-source-id: c6ab94e4a9c2192152a2b758f166fd5bc9c8c2e9

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