fix: [stix2 export] Avoiding export of the object related to the original file used for import
fix: [stix2 export] Avoiding export of the object related to the original file used for import

Rafiot/MISP,FloatingGhost/MISP,MISP/MISP,devnull-/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,FloatingGhost/MISP,FIRSTdotorg/MISP,MISP/MISP,devnull-/MISP,MISP/MISP,FIRSTdotorg/MISP,SteveClement/MISP,Rafiot/MISP,FIRSTdotorg/MISP,MISP/MISP,SteveClement/MISP,FIRSTdotorg/MISP,Rafiot/MISP,devnull-/MISP,FloatingGhost/MISP,Rafiot/MISP,FloatingGhost/MISP,devnull-/MISP