Remove plotIcon in Physics.qml for Component Inspector

[AzulRadio]

Signed-off-by: youhy [email protected]

Bug fix

Summary

This PR should not be ported forward.

Remove plotIcon in Physics.qml because plotting is not a feature for citadel and there is a warning about cannot find plottable_icon.svg everytime Gazebo Citadel is launched with msg print on.

Checklist

• [x] Signed all commits for DCO
• [ ] Added tests
• [ ] Updated documentation (as needed)
• [ ] Updated migration guide (as needed)
• [ ] Consider updating Python bindings (if the library has them)
• [ ] codecheck passed (See contributing)
• [ ] All tests passed (See test coverage)
• [ ] While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov[bot]]

Codecov Report

Merging #1658 (b980f0e) into ign-gazebo3 (873b43b) will not change coverage. The diff coverage is n/a.

@@             Coverage Diff              @@
##           ign-gazebo3    #1658   +/-   ##
============================================
  Coverage        77.98%   77.98%           
============================================
  Files              255      255           
  Lines            15041    15041           
============================================
  Hits             11729    11729           
  Misses            3312     3312           

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[jennuine]

Friendly reminder, we'll need to make sure these changes don't get forward ported