ATLASRECTS-6562 . Rm remaining ATLAS_NOT_THREAD_SAFE overloads
requested to merge ATLAS-EGamma/athena:Layer_rm_remaining_NOT_THREAD_SAFE_Overlaod_move_const_cast into master
ATLASRECTS-6562 . Rm remaining ATLAS_NOT_THREAD_SAFE overloads and move the const_cast to the relevant clients. Should finish the work for ATLASRECTS-6562 . The next step should be cleaning up the relevant client code.
Mentioning @sroe