DiagramGrid: Fix some redundant line breaks.
DiagramGrid: Fix some redundant line breaks.

In a number of places (especially in list comprehensions) I used the
backslash to assure proper interpretation; it turns out a number of such
backslashes were not necessary.

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