Deselect pdsh benchmark test in polars test suite

[wence-]

Description

These tests use a dbgen binary in the polars repo. This binary might not have been compiled with a compatible libc as the CI image uses.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[wence-]

We didn't notice this until turning on nightlies because PR CI doesn't run with the old GLIBC CI image combo.

[davidwendt]

Reference nightly failure: https://github.com/rapidsai/cudf/actions/runs/11851600381/job/33047951997

[bdice]

More information:

$ nm dbgen | grep GLIBC | cut -d "@" -f 2 | sort --version-sort | uniq
GLIBC_2.2.5
GLIBC_2.4
GLIBC_2.7
GLIBC_2.14
GLIBC_2.33
GLIBC_2.34

Rocky Linux 8 ships with glibc 2.28, so the symbols from 2.33 and 2.34 are not compatible.

[vyasr]

I've added a more targeted removal in #17320 as discussed offline, so I think we can close this PR in favor of that one.

[wence-]

Using #17320 instead.