Previously, small resolution renders that used DLSS for antialiasing
would sometimes display frame offset issues where the rendered frame is
not in sync with the current frame. To workaround this issue, we forced
the antialiasing mode to DLAA for small resolutions in both the Camera
and TiledCamra classes.

With recent changes in Isaac Sim 4.5, the frame offset issue no longer
appears, so this PR removes the workaround we've put in to avoid this
problem.

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- Bug fix (non-breaking change which fixes an issue)

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