Move some code from notify_subscriptions_removed().
Move some code from notify_subscriptions_removed().

There are two reasons for this change.  First, we want to be
consistent with notify_subscriptions_added(), which doesn't
handle "peer" events.  Second, we want to fix this code in a
subsequent commit not to do one user at a time, which is
inefficient.

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