Remove deprecated move_group pick& place functionality + demo

[sjahr]

Description

Fixes #1951

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

Patch and project coverage have no change.

Comparison is base (b079db8) 50.50% compared to head (e198a79) 50.50%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2239   +/-   ##
=======================================
  Coverage   50.50%   50.50%           
=======================================
  Files         386      386           
  Lines       31731    31731           
=======================================
  Hits        16022    16022           
  Misses      15709    15709           

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