Fixing bug in removing decorations from trigger EDM AODSLIM
It was first noticed in ATR-25724, the previous way of removing decorations was buggy. I had in the meanwhile made an extensions to this mechanism in !54328 (closed) that would also avoid running into this issue for now through the added if statement (if the list of decorations to remove is empty).
This MR should now handle the removal correctly. Has been tested with test_trigAna_RDOtoAOD_v1MC_build.py
Discussion of the concept of per target EDM: ATR-25505