[macOS SDK] Remove Library Setting around Swift macosx SDK

[spetrescu84]

Proposed changes

Remove Library Setting around Swift macosx SDK as it's causing issues compiling MSAL.framework for macOS on x86_64 architecture

Type of change

• [x] Feature work
• [ ] Bug fix
• [ ] Documentation
• [ ] Engineering change
• [ ] Test
• [ ] Logging/Telemetry

Risk

• [ ] High – Errors could cause MAJOR regression of many scenarios. (Example: new large features or high level infrastructure changes)
• [ ] Medium – Errors could cause regression of 1 or more scenarios. (Example: somewhat complex bug fixes, small new features)
• [x] Small – No issues are expected. (Example: Very small bug fixes, string changes, or configuration settings changes)

Additional information