Cleanup test_subs.py
Cleanup test_subs.py

* Code formatting
* Merge xpassing test for 2261 with an existing one

amitjamadagni/sympy,ga7g08/sympy,vipulroxx/sympy,aktech/sympy,sunny94/temp,MechCoder/sympy,kaichogami/sympy,cswiercz/sympy,skidzo/sympy,Curious72/sympy,drufat/sympy,rahuldan/sympy,beni55/sympy,abloomston/sympy,sunny94/temp,drufat/sympy,souravsingh/sympy,farhaanbukhsh/sympy,Titan-C/sympy,AunShiLord/sympy,ahhda/sympy,saurabhjn76/sympy,Shaswat27/sympy,grevutiu-gabriel/sympy,hrashk/sympy,liangjiaxing/sympy,maniteja123/sympy,moble/sympy,hrashk/sympy,pbrady/sympy,ga7g08/sympy,moble/sympy,cccfran/sympy,sahmed95/sympy,ahhda/sympy,Gadal/sympy,sampadsaha5/sympy,kevalds51/sympy,ChristinaZografou/sympy,saurabhjn76/sympy,yukoba/sympy,debugger22/sympy,AkademieOlympia/sympy,chaffra/sympy,sahilshekhawat/sympy,jamesblunt/sympy,Vishluck/sympy,meghana1995/sympy,Curious72/sympy,cswiercz/sympy,bukzor/sympy,madan96/sympy,pandeyadarsh/sympy,Vishluck/sympy,hargup/sympy,oliverlee/sympy,jaimahajan1997/sympy,souravsingh/sympy,yukoba/sympy,Designist/sympy,mcdaniel67/sympy,jamesblunt/sympy,lidavidm/sympy,vipulroxx/sympy,shikil/sympy,dqnykamp/sympy,madan96/sympy,debugger22/sympy,grevutiu-gabriel/sympy,mafiya69/sympy,debugger22/sympy,MridulS/sympy,jaimahajan1997/sympy,Shaswat27/sympy,emon10005/sympy,MridulS/sympy,VaibhavAgarwalVA/sympy,amitjamadagni/sympy,Sumith1896/sympy,toolforger/sympy,Sumith1896/sympy,wyom/sympy,maniteja123/sympy,postvakje/sympy,wanglongqi/sympy,Sumith1896/sympy,bukzor/sympy,souravsingh/sympy,lindsayad/sympy,saurabhjn76/sympy,jerli/sympy,atsao72/sympy,Curious72/sympy,Gadal/sympy,sahmed95/sympy,beni55/sympy,AunShiLord/sympy,mcdaniel67/sympy,kumarkrishna/sympy,chaffra/sympy,kmacinnis/sympy,Arafatk/sympy,jaimahajan1997/sympy,iamutkarshtiwari/sympy,ga7g08/sympy,Titan-C/sympy,shikil/sympy,ChristinaZografou/sympy,garvitr/sympy,jbbskinny/sympy,skidzo/sympy,toolforger/sympy,moble/sympy,pandeyadarsh/sympy,Vishluck/sympy,liangjiaxing/sympy,pbrady/sympy,kmacinnis/sympy,meghana1995/sympy,kmacinnis/sympy,Arafatk/sympy,skirpichev/omg,jerli/sympy,emon10005/sympy,hargup/sympy,skidzo/sympy,abloomston/sympy,yashsharan/sympy,kaushik94/sympy,abloomston/sympy,Mitchkoens/sympy,kumarkrishna/sympy,hargup/sympy,wyom/sympy,beni55/sympy,sahilshekhawat/sympy,Designist/sympy,MechCoder/sympy,madan96/sympy,oliverlee/sympy,yashsharan/sympy,mcdaniel67/sympy,garvitr/sympy,MridulS/sympy,chaffra/sympy,kumarkrishna/sympy,vipulroxx/sympy,kaichogami/sympy,drufat/sympy,rahuldan/sympy,Designist/sympy,shipci/sympy,atsao72/sympy,hrashk/sympy,asm666/sympy,shipci/sympy,shipci/sympy,atreyv/sympy,ChristinaZografou/sympy,grevutiu-gabriel/sympy,lidavidm/sympy,atreyv/sympy,Mitchkoens/sympy,Davidjohnwilson/sympy,mafiya69/sympy,Mitchkoens/sympy,liangjiaxing/sympy,kaushik94/sympy,postvakje/sympy,maniteja123/sympy,flacjacket/sympy,toolforger/sympy,farhaanbukhsh/sympy,aktech/sympy,cccfran/sympy,shikil/sympy,abhiii5459/sympy,asm666/sympy,diofant/diofant,farhaanbukhsh/sympy,VaibhavAgarwalVA/sympy,dqnykamp/sympy,AkademieOlympia/sympy,iamutkarshtiwari/sympy,lidavidm/sympy,wanglongqi/sympy,ahhda/sympy,Arafatk/sympy,sampadsaha5/sympy,Shaswat27/sympy,aktech/sympy,srjoglekar246/sympy,kevalds51/sympy,pandeyadarsh/sympy,oliverlee/sympy,lindsayad/sympy,meghana1995/sympy,kaichogami/sympy,AkademieOlympia/sympy,Davidjohnwilson/sympy,lindsayad/sympy,jbbskinny/sympy,kevalds51/sympy,asm666/sympy,atsao72/sympy,sunny94/temp,cccfran/sympy,wanglongqi/sympy,yukoba/sympy,sahmed95/sympy,Davidjohnwilson/sympy,kaushik94/sympy,bukzor/sympy,cswiercz/sympy,emon10005/sympy,atreyv/sympy,AunShiLord/sympy,MechCoder/sympy,iamutkarshtiwari/sympy,garvitr/sympy,jbbskinny/sympy,sahilshekhawat/sympy,Titan-C/sympy,jamesblunt/sympy,dqnykamp/sympy,Gadal/sympy,wyom/sympy,VaibhavAgarwalVA/sympy,rahuldan/sympy,postvakje/sympy,abhiii5459/sympy,mafiya69/sympy,yashsharan/sympy,pbrady/sympy,abhiii5459/sympy,sampadsaha5/sympy,jerli/sympy