common: cleanup unused get_targets function

[aparcar]

Duplicate wasn't used.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 25.00000% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 80.82%. Comparing base (5e65dec) to head (ea2d060). Report is 15 commits behind head on main.

Files	Patch %	Lines
asu/common.py	25.00%	6 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #816 +/- ## ========================================== + Coverage 80.75% 80.82% +0.06% ========================================== Files 15 15 Lines 977 975 -2 ========================================== - Hits 789 788 -1 + Misses 188 187 -1 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.