remove unflatten from Immutable
remove unflatten from Immutable

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