TriggerJobOpts+RecExCommon: cleanup trigger BS reco

Frank Winklmeierrequested to merge
fwinkl/athena:trig_bstoesd into master

Delete the obsolete BStoESD_Tier0_HLTConfig_jobOptions.py. There was essentially no difference anymore to the T0TriggerGetter, which it also called, apart from setting the Trigger.readBS flag. Also rename it to TriggerRecoGetter.

Cleanup other job options by either removing the obsolete include or using TriggerRecoGetter.

Relates to ATR-22725.

Edited by Frank Winklmeier

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