Code no longer runtimes on species change for mobs
Code no longer runtimes on species change for mobs

on species change was removing the inert mutation (from the mutation
index and mutation list) before trying to find it in that same list and
checking the index.

Instead we get the index first and then remove it

Razharas/-tg-station,infinitystation/-tg-station,optimumtact/-tg-station,tgstation/tgstation,Jordie0608/tgstation,infinitystation/-tg-station,Profakos/tgstation,Niknakflak/-tg-station,coiax/-tg-station,Cruix/-tg-station,SamuelRowe/-tg-station,MrStonedOne/tgstation,Thunder12345/-tg-station,Cruix/-tg-station,Cruix/-tg-station,WJohn/-tg-station,tgstation/tgstation,TheVekter/-tg-station,Bawhoppen/-tg-station,anconfuzedrock/tgstation,Bawhoppen/-tg-station,AnturK/-tg-station,Jordie0608/tgstation,TalkingCactus/tgstation,Arianya/tgstation,anconfuzedrock/tgstation,Razharas/-tg-station,AnturK/-tg-station,MicroWorldwide/SS13-TG-station,Profakos/tgstation,GunHog/-tg-station,JStheguy/tgstation,anconfuzedrock/tgstation,anconfuzedrock/tgstation,Jordie0608/tgstation,Profakos/tgstation,Incoming5643/-tg-station,anconfuzedrock/tgstation,XDTM/tgstation,JStheguy/tgstation,PKPenguin321/-tg-station,Aranclanos/-tg-station,WJohn/-tg-station,nicbn/tgstation,JJRcop/-tg-station,Razharas/-tg-station,Aranclanos/-tg-station,McBawbaggings/HippieStation,Razharas/-tg-station,ShizCalev/tgstation,Aranclanos/-tg-station,kingofkosmos/-tg-station,SamuelRowe/-tg-station,Thunder12345/-tg-station,Niknakflak/-tg-station,Thunder12345/-tg-station,Aranclanos/-tg-station,anconfuzedrock/tgstation,kingofkosmos/-tg-station,ohnopigeons/tgstation,Profakos/tgstation,TalkingCactus/tgstation,Razharas/-tg-station,XDTM/tgstation,MicroWorldwide/SS13-TG-station,Fox-McCloud/-tg-station,Mark9013100/tgstation-m9,XDTM/tgstation,infinitystation/-tg-station,NicholasM10/-tg-station,optimumtact/-tg-station,Bawhoppen/-tg-station,ShizCalev/tgstation,MicroWorldwide/SS13-TG-station,HippieStation/HippieStation,PKPenguin321/-tg-station,QualityVan/tgstation,optimumtact/-tg-station,ohnopigeons/tgstation,coiax/-tg-station,PKPenguin321/-tg-station,Razharas/-tg-station,Mark9013100/tgstation-m9,Cruix/-tg-station,Cyberboss/tgstation,nicbn/tgstation,ohnopigeons/tgstation,HippieStation/HippieStation,HippieStation/HippieStation,Arianya/tgstation,XDTM/tgstation,GunHog/-tg-station,infinitystation/-tg-station,optimumtact/-tg-station,AnturK/-tg-station,Fox-McCloud/-tg-station,ShizCalev/tgstation,ShizCalev/tgstation,Thunder12345/-tg-station,kingofkosmos/-tg-station,WJohn/-tg-station,TalkingCactus/tgstation,Poojawa/tgstation-fork,MrStonedOne/tgstation,AnturK/-tg-station,Razharas/-tg-station,JStheguy/tgstation,Bawhoppen/-tg-station,JJRcop/-tg-station,optimumtact/-tg-station,NicholasM10/-tg-station,tgstation/tgstation,TheVekter/-tg-station,Aranclanos/-tg-station,NicholasM10/-tg-station,AnturK/-tg-station,GunHog/-tg-station,TheRealGLH/-tg-station,JJRcop/tgstation,GunHog/-tg-station,tgstation/tgstation,infinitystation/-tg-station,QualityVan/tgstation,tgstation/tgstation,coiax/-tg-station,coiax/-tg-station,NicholasM10/-tg-station,securitycopper/-tg-station,Poojawa/tgstation-fork,JJRcop/tgstation,QualityVan/tgstation,CPTANT/-tg-station,WJohn/-tg-station,Jordie0608/tgstation,erwgd/-tg-station,Aranclanos/-tg-station,infinitystation/-tg-station,ohnopigeons/tgstation,GunHog/-tg-station,Cruix/-tg-station,tgstation/-tg-station,MrStonedOne/tgstation,Profakos/tgstation,HippieStation/HippieStation,nicbn/tgstation,Fox-McCloud/-tg-station,Bawhoppen/-tg-station,tgstation/tgstation,kingofkosmos/-tg-station,HippieStation/HippieStation,QualityVan/tgstation,Arianya/tgstation,GunHog/-tg-station,Cruix/-tg-station,McBawbaggings/HippieStation,Cyberboss/tgstation,securitycopper/-tg-station,MrStonedOne/tgstation,Jordie0608/-tg-station,NicholasM10/-tg-station,Mark9013100/tgstation-m9,McBawbaggings/HippieStation,XDTM/tgstation,Incoming5643/-tg-station,NicholasM10/-tg-station,erwgd/-tg-station,Poojawa/tgstation-fork,Jordie0608/-tg-station,TheRealGLH/-tg-station,JJRcop/tgstation,HippieStation/HippieStation,NicholasM10/-tg-station,Profakos/tgstation,PKPenguin321/-tg-station,ShizCalev/tgstation,Bawhoppen/-tg-station,Poojawa/tgstation-fork,Arianya/tgstation,AnturK/-tg-station,Niknakflak/-tg-station,SamuelRowe/-tg-station,TheVekter/-tg-station,Cyberboss/tgstation,TheRealGLH/-tg-station,McBawbaggings/HippieStation,Niknakflak/-tg-station,WJohn/-tg-station,WJohn/-tg-station,JJRcop/-tg-station,PKPenguin321/-tg-station,GunHog/-tg-station,Niknakflak/-tg-station,MicroWorldwide/SS13-TG-station,CPTANT/-tg-station,MicroWorldwide/SS13-TG-station,JJRcop/tgstation,Thunder12345/-tg-station,Poojawa/tgstation-fork,JJRcop/tgstation,optimumtact/-tg-station,CPTANT/-tg-station,CPTANT/-tg-station,McBawbaggings/HippieStation,JStheguy/tgstation,SamuelRowe/-tg-station,kingofkosmos/-tg-station,Fox-McCloud/-tg-station,Cruix/-tg-station,MicroWorldwide/SS13-TG-station,nicbn/tgstation,Cruix/-tg-station,securitycopper/-tg-station,Poojawa/tgstation-fork,McBawbaggings/HippieStation,optimumtact/-tg-station,kingofkosmos/-tg-station,tgstation/-tg-station,PKPenguin321/-tg-station,Arianya/tgstation,TalkingCactus/tgstation,infinitystation/-tg-station,Mark9013100/tgstation-m9,Cyberboss/tgstation,QualityVan/tgstation,MicroWorldwide/SS13-TG-station,Thunder12345/-tg-station,tgstation/tgstation,infinitystation/-tg-station,coiax/-tg-station,XDTM/tgstation,PKPenguin321/-tg-station,CPTANT/-tg-station,Incoming5643/-tg-station,MrStonedOne/tgstation,TheVekter/-tg-station,TheRealGLH/-tg-station,nicbn/tgstation,Aranclanos/-tg-station,JStheguy/tgstation,CPTANT/-tg-station,QualityVan/tgstation,tgstation/-tg-station,Thunder12345/-tg-station,Incoming5643/-tg-station,Mark9013100/tgstation-m9,TheVekter/-tg-station,Mark9013100/tgstation-m9,CPTANT/-tg-station,Mark9013100/tgstation-m9,MrStonedOne/tgstation,Incoming5643/-tg-station,McBawbaggings/HippieStation,ShizCalev/tgstation,nicbn/tgstation,tgstation/-tg-station,Cyberboss/tgstation,Arianya/tgstation,securitycopper/-tg-station,coiax/-tg-station,Jordie0608/-tg-station,Niknakflak/-tg-station,CPTANT/-tg-station,Niknakflak/-tg-station,Fox-McCloud/-tg-station,HippieStation/HippieStation,anconfuzedrock/tgstation,kingofkosmos/-tg-station,securitycopper/-tg-station,Jordie0608/tgstation,Fox-McCloud/-tg-station,TheVekter/-tg-station,Aranclanos/-tg-station,Incoming5643/-tg-station,McBawbaggings/HippieStation,Bawhoppen/-tg-station,AnturK/-tg-station,Incoming5643/-tg-station,Jordie0608/tgstation,Jordie0608/tgstation,Jordie0608/tgstation,ShizCalev/tgstation,JStheguy/tgstation,coiax/-tg-station,Bawhoppen/-tg-station,Razharas/-tg-station,Arianya/tgstation,Poojawa/tgstation-fork,XDTM/tgstation,JJRcop/tgstation,tgstation/tgstation,JJRcop/tgstation,ShizCalev/tgstation,Cyberboss/tgstation,Incoming5643/-tg-station,JStheguy/tgstation,Jordie0608/-tg-station,JJRcop/-tg-station,securitycopper/-tg-station,TheVekter/-tg-station,NicholasM10/-tg-station,Cyberboss/tgstation,QualityVan/tgstation,MrStonedOne/tgstation,securitycopper/-tg-station,Profakos/tgstation,Fox-McCloud/-tg-station,nicbn/tgstation,securitycopper/-tg-station,MrStonedOne/tgstation,erwgd/-tg-station,MicroWorldwide/SS13-TG-station,PKPenguin321/-tg-station,WJohn/-tg-station