Remove LMA kinematics plugin

[sjahr]

Description

As discussed earlier, this PR removes the LMA kinematics plugin. MoveIt2 offers multiple other and better alternatives. This PR is part of efforts to reduce the maintenance burden of moveit2 and to make it easier to change things in the future without the need to update barely used features.

Checklist

• Required by CI: Code is auto formatted using clang-format
• Extend the tutorials / documentation reference
• Document API changes relevant to the user in the MIGRATION.md notes
• Create tests, which fail without this PR reference
• Include a screenshot if changing a GUI
• While waiting for someone to review your request, please help review another open pull request to support the maintainers

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b2a3b16) 50.85% compared to head (a92f1e6) 50.64%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2595      +/-   ##
==========================================
- Coverage   50.85%   50.64%   -0.20%     
==========================================
  Files         388      387       -1     
  Lines       32360    32201     -159     
==========================================
- Hits        16453    16305     -148     
+ Misses      15907    15896      -11     

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[sjahr]

Failing test is the flaky servo one 😓