Revert "[cs] More Ordinal comparisons"

This reverts commit 5223f9b916032d8c58ae638a02ba3199fe68054d.
Revert "[cs] Started to work on being culture invariant. Started to tackle Issue #996; Transformed Runtime.compare to haxe code. Fixed enum to int on native C# enums. Closes #2931"

This reverts commit 1cd97a3fa49d06c11d517343cbf4ffabc8e64abc.