[native] Fix bitcode issue with Xcode 14

Summary:
Addresses ENG-1938. Learned more about this issue here.

This diff effectively reverts D30. Back then, the default was ENABLE_BITCODE = YES, and that diff had the effect of disabling bitcode for debug builds. Now that ENABLE_BITCODE = NO is the default, that diff has the effect of enabling bitcode for release builds.

Deleting these lines puts us back to "default" behavior, which is now to have bitcode disabled.

Test Plan: Issue no longer occurs after yarn workspace native clean-all && yarn cleaninstall

Reviewers: atul

Reviewed By: atul

Subscribers: tomek, abosh

Differential Revision: https://phab.comm.dev/D5277