When attempting to Build an iOS Simulator project using Xcode 11.0 Beta, Users are getting multi-definition Errors from UnityMetalSupport.h and CVTextureCache.mm

To reproduce:

1. Download attached "Beta11TestBR.zip" project and open in Unity
2. Open "SampleScene" scene
3. Set active Platform to iOS
4. In Player Settings set Target SDK to Simulator SDK
5. Build for iOS
6. Set Device to iPhone XS, iPhone XR or another
7. Deploy the Xcode project to the Simulator

Expected result: Simulator opens and runs Project
Actual result: Deployment fails and throws the multi-definition Errors from UnityMetalSupport.h and CVTextureCache.mm

Notes:
- This issue only happens on Simulators
- Xcode Version 11.0 beta 2 (11M337n)

Tested with:
- iPhone 8 Plus, iOS: 12.0 - Not Reproduced
- iPhone XR, iOS: 12.0 - Not Reproduced

Reproduced on Unity 2017.4.0f1, 2017.4.29f1, 2018.3.14f1, 2018.4.3f1, 2019.1.7f1, 2019.2.0b6 and 2019.3.0a7