Remove Support for Bitcode Enabled Flavor of Amazon Chime SDK for iOS

[zhinang-amazon]

Announcement:

Bitcode is now deprecated and our team will be removing support for the Bitcode Enabled flavor of our iOS SDK in the future. This is due to deprecation of bitcode in Xcode 14 release note.

Starting with Xcode 14, bitcode is no longer required for watchOS and tvOS applications, and the App Store no 
longer accepts bitcode submissions from Xcode 14.

Xcode no longer builds bitcode by default and generates a warning message if a project explicitly enables 
bitcode: “Building with bitcode is deprecated. Please update your project and/or target settings to disable 
bitcode.” The capability to build with bitcode will be removed in a future Xcode release. IPAs that contain 
bitcode will have the bitcode stripped before being submitted to the App Store. Debug symbols can only 
be downloaded from App Store Connect / TestFlight for existing bitcode submissions and are no longer 
available for submissions made with Xcode 14. (86118779)

To reduce the impact of this change, please use the No Bitcode flavor of our iOS SDK. If building this SDK from source, build without Bitcode which is now the default for Xcode 14.