Remove unused header

[Abishalini]

Description

Removing dead code

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

Base: 51.09% // Head: 51.11% // Increases project coverage by +0.03% 🎉

Coverage data is based on head (9011f83) compared to base (8fddbda).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1572      +/-   ##
==========================================
+ Coverage   51.09%   51.11%   +0.03%     
==========================================
  Files         380      380              
  Lines       31802    31802              
==========================================
+ Hits        16245    16252       +7     
+ Misses      15557    15550       -7     

Impacted Files	Coverage Δ
moveit_ros/moveit_servo/src/servo_calcs.cpp	68.25% <0.00%> (+0.62%)	⬆️
...dl_kinematics_plugin/src/kdl_kinematics_plugin.cpp	76.43% <0.00%> (+1.08%)	⬆️

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