[DEBUG](iOS) Remove assert() calls to handle cases that should never occur.
[DEBUG](iOS) Remove assert() calls to handle cases that should never occur.

pwkalana9/ARSDKBuildUtils,149393437/ARSDKBuildUtils,Parrot-Developers/ARSDKBuildUtils,149393437/ARSDKBuildUtils,cvramire/ARSDKBuildUtils,niavok/ARSDKBuildUtils,cvramire/ARSDKBuildUtils,Parrot-Developers/ARSDKBuildUtils,niavok/ARSDKBuildUtils,aoi/ARSDKBuildUtils,aoi/ARSDKBuildUtils,pwkalana9/ARSDKBuildUtils