Remove "GetCurrentWorldGeometry2D" of BaseRenderer

Summary:
Clean code

Correct format, use itk-macros, remove unnecessary comments

Remove deprecated functions

The functions are deprecated for several years.
They can safely be removed.

Test Plan: check CI builds

Reviewers: kislinsk, O1 MITK Reviewer Group I

Reviewed By: kislinsk, O1 MITK Reviewer Group I

Subscribers: kislinsk, kalali

Maniphest Tasks: T29212

Differential Revision: https://phabricator.mitk.org/D700