Get rid of nsimplify: fix test_C18
Get rid of nsimplify: fix test_C18

Shaswat27/sympy,pandeyadarsh/sympy,cccfran/sympy,VaibhavAgarwalVA/sympy,Mitchkoens/sympy,maniteja123/sympy,sahmed95/sympy,pandeyadarsh/sympy,Sumith1896/sympy,shikil/sympy,sunny94/temp,sahilshekhawat/sympy,yukoba/sympy,bukzor/sympy,AunShiLord/sympy,kaushik94/sympy,lidavidm/sympy,jbbskinny/sympy,abloomston/sympy,shipci/sympy,ChristinaZografou/sympy,Designist/sympy,dqnykamp/sympy,cswiercz/sympy,shipci/sympy,kaushik94/sympy,AkademieOlympia/sympy,sahmed95/sympy,ga7g08/sympy,mcdaniel67/sympy,aktech/sympy,yashsharan/sympy,shikil/sympy,ahhda/sympy,hrashk/sympy,jamesblunt/sympy,abloomston/sympy,skidzo/sympy,madan96/sympy,chaffra/sympy,cccfran/sympy,atreyv/sympy,pbrady/sympy,jbbskinny/sympy,Titan-C/sympy,ahhda/sympy,liangjiaxing/sympy,drufat/sympy,shipci/sympy,Curious72/sympy,ChristinaZografou/sympy,oliverlee/sympy,hrashk/sympy,asm666/sympy,jaimahajan1997/sympy,beni55/sympy,aktech/sympy,kevalds51/sympy,souravsingh/sympy,atreyv/sympy,Davidjohnwilson/sympy,rahuldan/sympy,MechCoder/sympy,toolforger/sympy,asm666/sympy,abhiii5459/sympy,Gadal/sympy,skidzo/sympy,kaichogami/sympy,AkademieOlympia/sympy,grevutiu-gabriel/sympy,toolforger/sympy,saurabhjn76/sympy,emon10005/sympy,farhaanbukhsh/sympy,jerli/sympy,kaushik94/sympy,lidavidm/sympy,maniteja123/sympy,Designist/sympy,abhiii5459/sympy,chaffra/sympy,madan96/sympy,AunShiLord/sympy,wyom/sympy,postvakje/sympy,atsao72/sympy,MechCoder/sympy,MridulS/sympy,sampadsaha5/sympy,atreyv/sympy,saurabhjn76/sympy,AkademieOlympia/sympy,kaichogami/sympy,shikil/sympy,cswiercz/sympy,pbrady/sympy,wyom/sympy,meghana1995/sympy,AunShiLord/sympy,grevutiu-gabriel/sympy,moble/sympy,Gadal/sympy,mafiya69/sympy,beni55/sympy,vipulroxx/sympy,Davidjohnwilson/sympy,abhiii5459/sympy,iamutkarshtiwari/sympy,sahilshekhawat/sympy,meghana1995/sympy,ChristinaZografou/sympy,hrashk/sympy,jaimahajan1997/sympy,pandeyadarsh/sympy,atsao72/sympy,kmacinnis/sympy,debugger22/sympy,saurabhjn76/sympy,sampadsaha5/sympy,yukoba/sympy,emon10005/sympy,lindsayad/sympy,cswiercz/sympy,yashsharan/sympy,Sumith1896/sympy,kmacinnis/sympy,farhaanbukhsh/sympy,bukzor/sympy,rahuldan/sympy,kaichogami/sympy,debugger22/sympy,cccfran/sympy,mafiya69/sympy,liangjiaxing/sympy,MridulS/sympy,debugger22/sympy,aktech/sympy,sahilshekhawat/sympy,garvitr/sympy,sunny94/temp,diofant/diofant,mcdaniel67/sympy,dqnykamp/sympy,Arafatk/sympy,sahmed95/sympy,jbbskinny/sympy,jerli/sympy,farhaanbukhsh/sympy,Titan-C/sympy,Arafatk/sympy,Davidjohnwilson/sympy,Gadal/sympy,mafiya69/sympy,sampadsaha5/sympy,ga7g08/sympy,maniteja123/sympy,ga7g08/sympy,atsao72/sympy,postvakje/sympy,abloomston/sympy,toolforger/sympy,emon10005/sympy,jerli/sympy,hargup/sympy,Curious72/sympy,hargup/sympy,meghana1995/sympy,bukzor/sympy,kumarkrishna/sympy,oliverlee/sympy,Designist/sympy,wanglongqi/sympy,Mitchkoens/sympy,kmacinnis/sympy,moble/sympy,skidzo/sympy,vipulroxx/sympy,jamesblunt/sympy,liangjiaxing/sympy,grevutiu-gabriel/sympy,iamutkarshtiwari/sympy,kevalds51/sympy,kumarkrishna/sympy,pbrady/sympy,vipulroxx/sympy,Arafatk/sympy,dqnykamp/sympy,skirpichev/omg,wanglongqi/sympy,VaibhavAgarwalVA/sympy,souravsingh/sympy,lindsayad/sympy,rahuldan/sympy,drufat/sympy,VaibhavAgarwalVA/sympy,lindsayad/sympy,wyom/sympy,Vishluck/sympy,iamutkarshtiwari/sympy,Sumith1896/sympy,wanglongqi/sympy,yashsharan/sympy,mcdaniel67/sympy,MridulS/sympy,postvakje/sympy,oliverlee/sympy,garvitr/sympy,jamesblunt/sympy,kumarkrishna/sympy,moble/sympy,sunny94/temp,asm666/sympy,yukoba/sympy,jaimahajan1997/sympy,beni55/sympy,Vishluck/sympy,souravsingh/sympy,Vishluck/sympy,chaffra/sympy,lidavidm/sympy,drufat/sympy,ahhda/sympy,MechCoder/sympy,Mitchkoens/sympy,Titan-C/sympy,madan96/sympy,hargup/sympy,Shaswat27/sympy,garvitr/sympy,Shaswat27/sympy,kevalds51/sympy,Curious72/sympy