removing useless process from pythia config (#2110)

Co-authored-by: Lucamicheletti93 <luca.mike93@gmail.com>

Author: lucamicheletti93

MC/config/PWGDQ/pythia8/generator/pythia8_inel_triggerGap_OO5TeV.cfg

@@ -6,7 +6,6 @@ Beams:frameType = 1
 
 ### processes
 SoftQCD:inelastic on		# all inelastic processes
-CharmoniumShower:all = on
 
 ### decays
 ParticleDecays:limitTau0 on