There was a need to be able to remove the last element of a path in the C++, C and Python API.

[master < Task] PR

• Check, and update documentation if necessary
• Provide the full content or a guide for the final git message

To keep docs changelog up to date, one more thing to do:

• Write a release note here, including added/changed clauses
  You are now able to remove the last element of a path in C++ (path.Pop()) , C (mgp_path_pop) and Python (path.pop()) API
• Tag someone from docs team in the comments