Comment out a number of unreliable tests in the plotting module.
Comment out a number of unreliable tests in the plotting module.

These tests were dedicated to testing what types of warnings are raised. The
tests will still be ran, however the types of warnings are not checked anymore.

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