Remove unused import (from ruff . --fix)

[Andrew-S-Rosen]

Description

I applied ruff autofixes (i.e. ruff . --fix) to the source code, which found... precisely one unused import. 😅

Type of change

• Code maintentance/cleanup

[benclifford]

i feel like this removed a lot more than it should have

[Andrew-S-Rosen]

@benclifford: There should only be one line in one file changed. You probably saw an older commit where I also ran ruff on the test suite, which wreaked havoc on things. I reverted that change.

[benclifford]

the existing tooling usually catches unused imports - it's interesting that it didn't catch this one

[benclifford]

I realised why the one file this PR ended up modifying wasn't picked up by flake8: it's because this file isn't source code, but instead output code generated by poncho_package_serverize and committed into the Parsl tree (see PR #2605).

It makes less sense to edit machine generated object code, even though it happens to be in Python syntax - this isn't a file for humans to be editing, and changes to that file should be via changing how poncho_package_serverize creates that file, or by editing the source file parsl_coprocess_stub.py.

In a more pure build system, this file wouldn't exist in version control and would be built from the stub file at compile/build time - but that isn't what's happening, so this file ends up as a violation of "don't commit object code into version control" instead.

[Andrew-S-Rosen]

Ah, well now that clears things up!