Remove unnecessary publish_limited_velocity_ member (backport #2266)

[mergify]

Summary

• Removed the redundant publish_limited_velocity_ member from the DiffDriveController.

Changes

• Removed publish_limited_velocity_ from the header file.
• Replaced uses of publish_limited_velocity_ with params_.publish_limited_velocity in the implementation.

Closes #2246

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This is an automatic backport of pull request #2266 done by Mergify.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 84.38%. Comparing base (78ee41a) to head (233c619).
⚠️ Report is 2 commits behind head on jazzy.

Files with missing lines	Patch %	Lines
...iff_drive_controller/src/diff_drive_controller.cpp	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            jazzy    #2268      +/-   ##
==========================================
- Coverage   84.38%   84.38%   -0.01%     
==========================================
  Files         153      153              
  Lines       15117    15116       -1     
  Branches     1338     1338              
==========================================
- Hits        12756    12755       -1     
  Misses       1873     1873              
  Partials      488      488              

Flag	Coverage Δ
unittests	84.38% <0.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...iff_drive_controller/src/diff_drive_controller.cpp	75.90% <0.00%> (-0.08%)	⬇️

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