ATR-30372 - Remove [L1_jJ30_FIRSTEMPTY], [L1_jJ60_FIRSTEMPTY] and [L1_eEM9_FIRSTEMPTY] seeded chains for LAr

Francesco Curciorequested to merge
fcurcio/athena:TM-14Jan2025 into 24.0

removed the chains mentioned in the title from P1_run3_v1.py

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