Remove unreachable remove_unreachable() method.
Remove unreachable remove_unreachable() method.

Sorry, couldn't resist wording the commit message like that. :)

The remove_unreachable() method on Message was no longer being
used, and the commit history made it fairly clear we won't need it
in the future.

vikas-parashar/zulip,rishig/zulip,isht3/zulip,niftynei/zulip,showell/zulip,krtkmj/zulip,rht/zulip,sup95/zulip,peguin40/zulip,vabs22/zulip,brockwhittaker/zulip,souravbadami/zulip,grave-w-grave/zulip,samatdav/zulip,jphilipsen05/zulip,vaidap/zulip,Galexrt/zulip,timabbott/zulip,cosmicAsymmetry/zulip,umkay/zulip,timabbott/zulip,synicalsyntax/zulip,rht/zulip,andersk/zulip,jainayush975/zulip,calvinleenyc/zulip,paxapy/zulip,calvinleenyc/zulip,andersk/zulip,sonali0901/zulip,amanharitsh123/zulip,j831/zulip,aakash-cr7/zulip,grave-w-grave/zulip,christi3k/zulip,isht3/zulip,AZtheAsian/zulip,j831/zulip,christi3k/zulip,ryanbackman/zulip,joyhchen/zulip,peguin40/zulip,cosmicAsymmetry/zulip,showell/zulip,dhcrzf/zulip,amanharitsh123/zulip,jainayush975/zulip,dhcrzf/zulip,jphilipsen05/zulip,peguin40/zulip,jrowan/zulip,Diptanshu8/zulip,niftynei/zulip,peguin40/zulip,amyliu345/zulip,vaidap/zulip,AZtheAsian/zulip,isht3/zulip,eeshangarg/zulip,tommyip/zulip,dattatreya303/zulip,sonali0901/zulip,blaze225/zulip,verma-varsha/zulip,Diptanshu8/zulip,zulip/zulip,eeshangarg/zulip,TigorC/zulip,zulip/zulip,rishig/zulip,vabs22/zulip,vabs22/zulip,christi3k/zulip,vaidap/zulip,kou/zulip,rishig/zulip,amanharitsh123/zulip,KingxBanana/zulip,dawran6/zulip,showell/zulip,zacps/zulip,dhcrzf/zulip,jackrzhang/zulip,Diptanshu8/zulip,PhilSk/zulip,rht/zulip,dattatreya303/zulip,JPJPJPOPOP/zulip,dawran6/zulip,PhilSk/zulip,jrowan/zulip,eeshangarg/zulip,jackrzhang/zulip,umkay/zulip,cosmicAsymmetry/zulip,verma-varsha/zulip,TigorC/zulip,aakash-cr7/zulip,SmartPeople/zulip,shubhamdhama/zulip,vikas-parashar/zulip,paxapy/zulip,dawran6/zulip,rishig/zulip,blaze225/zulip,dhcrzf/zulip,souravbadami/zulip,samatdav/zulip,vabs22/zulip,aakash-cr7/zulip,hackerkid/zulip,mahim97/zulip,vikas-parashar/zulip,cosmicAsymmetry/zulip,joyhchen/zulip,SmartPeople/zulip,KingxBanana/zulip,tommyip/zulip,KingxBanana/zulip,calvinleenyc/zulip,TigorC/zulip,jainayush975/zulip,verma-varsha/zulip,peguin40/zulip,vabs22/zulip,Diptanshu8/zulip,susansls/zulip,jrowan/zulip,shubhamdhama/zulip,tommyip/zulip,aakash-cr7/zulip,brainwane/zulip,Juanvulcano/zulip,Galexrt/zulip,blaze225/zulip,amanharitsh123/zulip,sharmaeklavya2/zulip,Jianchun1/zulip,andersk/zulip,Juanvulcano/zulip,brockwhittaker/zulip,AZtheAsian/zulip,PhilSk/zulip,mahim97/zulip,sup95/zulip,sup95/zulip,Diptanshu8/zulip,christi3k/zulip,synicalsyntax/zulip,AZtheAsian/zulip,vaidap/zulip,timabbott/zulip,Jianchun1/zulip,eeshangarg/zulip,mahim97/zulip,showell/zulip,zacps/zulip,punchagan/zulip,mohsenSy/zulip,Galexrt/zulip,kou/zulip,Galexrt/zulip,shubhamdhama/zulip,eeshangarg/zulip,ryanbackman/zulip,kou/zulip,andersk/zulip,amyliu345/zulip,mahim97/zulip,TigorC/zulip,ryanbackman/zulip,brainwane/zulip,timabbott/zulip,aakash-cr7/zulip,mohsenSy/zulip,TigorC/zulip,rishig/zulip,j831/zulip,rht/zulip,Galexrt/zulip,SmartPeople/zulip,dattatreya303/zulip,niftynei/zulip,Diptanshu8/zulip,souravbadami/zulip,JPJPJPOPOP/zulip,zulip/zulip,ryanbackman/zulip,punchagan/zulip,grave-w-grave/zulip,blaze225/zulip,tommyip/zulip,punchagan/zulip,dawran6/zulip,shubhamdhama/zulip,vaidap/zulip,mohsenSy/zulip,shubhamdhama/zulip,showell/zulip,krtkmj/zulip,sharmaeklavya2/zulip,synicalsyntax/zulip,tommyip/zulip,dattatreya303/zulip,sonali0901/zulip,jphilipsen05/zulip,brockwhittaker/zulip,SmartPeople/zulip,showell/zulip,brainwane/zulip,amyliu345/zulip,KingxBanana/zulip,vikas-parashar/zulip,isht3/zulip,dattatreya303/zulip,hackerkid/zulip,mohsenSy/zulip,brainwane/zulip,christi3k/zulip,mohsenSy/zulip,zacps/zulip,krtkmj/zulip,JPJPJPOPOP/zulip,andersk/zulip,JPJPJPOPOP/zulip,JPJPJPOPOP/zulip,krtkmj/zulip,mohsenSy/zulip,niftynei/zulip,Juanvulcano/zulip,reyha/zulip,KingxBanana/zulip,Juanvulcano/zulip,SmartPeople/zulip,samatdav/zulip,sharmaeklavya2/zulip,arpith/zulip,umkay/zulip,vabs22/zulip,SmartPeople/zulip,arpith/zulip,arpith/zulip,amanharitsh123/zulip,hackerkid/zulip,brockwhittaker/zulip,niftynei/zulip,shubhamdhama/zulip,sharmaeklavya2/zulip,rishig/zulip,andersk/zulip,sonali0901/zulip,krtkmj/zulip,grave-w-grave/zulip,jrowan/zulip,rishig/zulip,peguin40/zulip,arpith/zulip,TigorC/zulip,sup95/zulip,samatdav/zulip,umkay/zulip,Juanvulcano/zulip,paxapy/zulip,umkay/zulip,brainwane/zulip,rht/zulip,brainwane/zulip,susansls/zulip,paxapy/zulip,cosmicAsymmetry/zulip,ryanbackman/zulip,joyhchen/zulip,amyliu345/zulip,souravbadami/zulip,jackrzhang/zulip,Jianchun1/zulip,punchagan/zulip,sup95/zulip,jackrzhang/zulip,susansls/zulip,samatdav/zulip,zacps/zulip,Jianchun1/zulip,dawran6/zulip,jackrzhang/zulip,reyha/zulip,showell/zulip,verma-varsha/zulip,blaze225/zulip,timabbott/zulip,tommyip/zulip,JPJPJPOPOP/zulip,aakash-cr7/zulip,punchagan/zulip,eeshangarg/zulip,blaze225/zulip,sharmaeklavya2/zulip,susansls/zulip,amyliu345/zulip,isht3/zulip,grave-w-grave/zulip,jphilipsen05/zulip,timabbott/zulip,synicalsyntax/zulip,arpith/zulip,jrowan/zulip,punchagan/zulip,jrowan/zulip,Jianchun1/zulip,jainayush975/zulip,synicalsyntax/zulip,sonali0901/zulip,rht/zulip,zulip/zulip,synicalsyntax/zulip,Galexrt/zulip,jackrzhang/zulip,sonali0901/zulip,dawran6/zulip,rht/zulip,cosmicAsymmetry/zulip,dhcrzf/zulip,AZtheAsian/zulip,brockwhittaker/zulip,susansls/zulip,joyhchen/zulip,brainwane/zulip,Jianchun1/zulip,andersk/zulip,zacps/zulip,Juanvulcano/zulip,Galexrt/zulip,amyliu345/zulip,verma-varsha/zulip,souravbadami/zulip,reyha/zulip,isht3/zulip,reyha/zulip,shubhamdhama/zulip,jainayush975/zulip,mahim97/zulip,tommyip/zulip,hackerkid/zulip,PhilSk/zulip,calvinleenyc/zulip,vikas-parashar/zulip,samatdav/zulip,eeshangarg/zulip,souravbadami/zulip,PhilSk/zulip,PhilSk/zulip,arpith/zulip,paxapy/zulip,mahim97/zulip,hackerkid/zulip,joyhchen/zulip,kou/zulip,zulip/zulip,umkay/zulip,susansls/zulip,krtkmj/zulip,krtkmj/zulip,dattatreya303/zulip,hackerkid/zulip,hackerkid/zulip,reyha/zulip,j831/zulip,sharmaeklavya2/zulip,j831/zulip,grave-w-grave/zulip,calvinleenyc/zulip,AZtheAsian/zulip,kou/zulip,brockwhittaker/zulip,calvinleenyc/zulip,reyha/zulip,sup95/zulip,vikas-parashar/zulip,christi3k/zulip,jackrzhang/zulip,jphilipsen05/zulip,kou/zulip,punchagan/zulip,zulip/zulip,zacps/zulip,dhcrzf/zulip,timabbott/zulip,jphilipsen05/zulip,j831/zulip,ryanbackman/zulip,vaidap/zulip,synicalsyntax/zulip,zulip/zulip,umkay/zulip,joyhchen/zulip,verma-varsha/zulip,jainayush975/zulip,KingxBanana/zulip,amanharitsh123/zulip,niftynei/zulip,dhcrzf/zulip,kou/zulip,paxapy/zulip