Forward fix for 81763 (#4490)
See https://github.com/pytorch/pytorch/pull/81763#issuecomment-1399187907 and https://github.com/pytorch/pytorch/pull/81763#issuecomment-1399318349
Now FrobeniusNorm is just left for backwards compatibility, and it
dispatches to `at::norm`, which dispatches to `xla::norm`. As such, we
don't need the `sqrt` counters as they will not be updated. We remove
these checks as those from `TestNorm*` do not have them either.
