Data overlay: cleanup zero bias selection scripts

This cleans-up zero bias selection scripts for data overlay. I tested scripts locally and all run, but more work will be needed to make them more configurable.

Note for shifters:

• these scripts are not tested in the CI as they query Oracle and EOS
• git might detect files as new unfortunately, I am open to suggestions for improvements but I'd rather do them in a follow-up MR so they can be tracked better
• I recommend hiding whitespace changes

/cc @tkharlam @ahaas

Event/EventOverlay/EventOverlayJobTransforms/scripts/0biasselection/cleanup.sh

- rm -rf output_stream*
- rm lbn_anal_map_stream*
- rm lbnevents_*
- rm runs_lbn_files.txt
- rm log_lbn_anal*
- rm lbn_anal_map.txt
-