There used to be a time when NGO supported both UTP 1.X and 2.X, which led to the use of defines like UTP_TRANSPORT_2_0_ABOVE to gate features that were only usable with UTP 2.X (or by proxy to differentiate code that was different for collections 1.X verus 2.X). In some files (like UnityTransport.cs) these defines are used abundantly, to the point of impacting code readability.

But NGO 2.X now depends on UTP 2.X, so these defines are now useless since they'll always be defined. This PR thus removes them. Functionally speaking this PR should change absolutely nothing since it just removes code that was never compiled anyway.

Changelog

N/A

Testing and Documentation

• No tests have been added (in fact some were removed).
• No documentation changes or additions were necessary.