PGI/NVHPC: Remove -Mipa compiler option for 23.3+

-Mipa was removed since 23.3. The compiler warns about it:

nvfortran-Warning-The option -Mipa has been deprecated and is ignored.

See: https://docs.nvidia.com/hpc-sdk/archive/23.9/hpc-sdk-release-notes/index.html#deprecations
Backport: release