remove Integral.is_number; use super class routine
remove Integral.is_number; use super class routine

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