anchordocking: clean up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46182 4005530d-fff6-0310-9dd1-cebe43e6787f
EditorToolbar package updates by G. Colla. Issue #26692.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46183 4005530d-fff6-0310-9dd1-cebe43e6787f