Remove CUDA tests from distributed tests. (#9612)
This PR removes CUDA specific logic and tests from distributed tests.
Including both multiprocessing and SPMD tests. This is in line with the
CUDA deprecation that started on release 2.8.
**Key Changes:**
- Removed `skipIf` test decorations whenever the condition is checking
CUDA
- Removed `CUDA` from the list of allowed devices for a few of these
tests
