models: Remove obsolete realm.deployment property.
models: Remove obsolete realm.deployment property.

We've now removed all of the code that accesses this.

brockwhittaker/zulip,rht/zulip,vaidap/zulip,amanharitsh123/zulip,vaidap/zulip,kou/zulip,andersk/zulip,aakash-cr7/zulip,eeshangarg/zulip,aakash-cr7/zulip,christi3k/zulip,zulip/zulip,PhilSk/zulip,showell/zulip,ryanbackman/zulip,synicalsyntax/zulip,dhcrzf/zulip,ryanbackman/zulip,blaze225/zulip,zulip/zulip,jrowan/zulip,SmartPeople/zulip,hackerkid/zulip,brainwane/zulip,tommyip/zulip,aakash-cr7/zulip,susansls/zulip,punchagan/zulip,christi3k/zulip,dhcrzf/zulip,mahim97/zulip,susansls/zulip,rishig/zulip,aakash-cr7/zulip,dattatreya303/zulip,SmartPeople/zulip,dawran6/zulip,showell/zulip,j831/zulip,souravbadami/zulip,susansls/zulip,punchagan/zulip,andersk/zulip,JPJPJPOPOP/zulip,dattatreya303/zulip,jainayush975/zulip,eeshangarg/zulip,dattatreya303/zulip,punchagan/zulip,rht/zulip,mahim97/zulip,showell/zulip,jackrzhang/zulip,brockwhittaker/zulip,showell/zulip,blaze225/zulip,PhilSk/zulip,andersk/zulip,rishig/zulip,eeshangarg/zulip,jainayush975/zulip,andersk/zulip,JPJPJPOPOP/zulip,shubhamdhama/zulip,christi3k/zulip,timabbott/zulip,Galexrt/zulip,Galexrt/zulip,aakash-cr7/zulip,dhcrzf/zulip,amanharitsh123/zulip,brainwane/zulip,vaidap/zulip,rht/zulip,kou/zulip,j831/zulip,jackrzhang/zulip,jphilipsen05/zulip,PhilSk/zulip,vabs22/zulip,vabs22/zulip,timabbott/zulip,mahim97/zulip,zulip/zulip,jrowan/zulip,jphilipsen05/zulip,vabs22/zulip,tommyip/zulip,brainwane/zulip,souravbadami/zulip,andersk/zulip,SmartPeople/zulip,jphilipsen05/zulip,punchagan/zulip,SmartPeople/zulip,jackrzhang/zulip,rishig/zulip,jainayush975/zulip,JPJPJPOPOP/zulip,blaze225/zulip,rht/zulip,hackerkid/zulip,jackrzhang/zulip,punchagan/zulip,shubhamdhama/zulip,amanharitsh123/zulip,jphilipsen05/zulip,zulip/zulip,timabbott/zulip,synicalsyntax/zulip,showell/zulip,timabbott/zulip,eeshangarg/zulip,showell/zulip,brockwhittaker/zulip,brainwane/zulip,j831/zulip,rht/zulip,eeshangarg/zulip,brockwhittaker/zulip,synicalsyntax/zulip,hackerkid/zulip,JPJPJPOPOP/zulip,brainwane/zulip,christi3k/zulip,zulip/zulip,brockwhittaker/zulip,dhcrzf/zulip,hackerkid/zulip,amanharitsh123/zulip,jphilipsen05/zulip,Galexrt/zulip,JPJPJPOPOP/zulip,andersk/zulip,shubhamdhama/zulip,j831/zulip,j831/zulip,dawran6/zulip,dattatreya303/zulip,vabs22/zulip,dhcrzf/zulip,rht/zulip,hackerkid/zulip,amanharitsh123/zulip,brainwane/zulip,shubhamdhama/zulip,souravbadami/zulip,jackrzhang/zulip,blaze225/zulip,rishig/zulip,punchagan/zulip,eeshangarg/zulip,PhilSk/zulip,timabbott/zulip,synicalsyntax/zulip,blaze225/zulip,dawran6/zulip,Galexrt/zulip,showell/zulip,souravbadami/zulip,Galexrt/zulip,verma-varsha/zulip,jphilipsen05/zulip,Galexrt/zulip,zulip/zulip,shubhamdhama/zulip,verma-varsha/zulip,hackerkid/zulip,tommyip/zulip,brockwhittaker/zulip,rishig/zulip,ryanbackman/zulip,andersk/zulip,tommyip/zulip,ryanbackman/zulip,vaidap/zulip,dattatreya303/zulip,punchagan/zulip,souravbadami/zulip,jrowan/zulip,tommyip/zulip,susansls/zulip,dattatreya303/zulip,christi3k/zulip,tommyip/zulip,synicalsyntax/zulip,timabbott/zulip,jainayush975/zulip,jainayush975/zulip,jrowan/zulip,mahim97/zulip,susansls/zulip,synicalsyntax/zulip,dhcrzf/zulip,vaidap/zulip,amanharitsh123/zulip,shubhamdhama/zulip,christi3k/zulip,verma-varsha/zulip,PhilSk/zulip,ryanbackman/zulip,PhilSk/zulip,kou/zulip,tommyip/zulip,jainayush975/zulip,dawran6/zulip,rishig/zulip,kou/zulip,kou/zulip,vabs22/zulip,hackerkid/zulip,mahim97/zulip,dawran6/zulip,mahim97/zulip,verma-varsha/zulip,ryanbackman/zulip,rht/zulip,JPJPJPOPOP/zulip,eeshangarg/zulip,dawran6/zulip,blaze225/zulip,vabs22/zulip,zulip/zulip,SmartPeople/zulip,kou/zulip,kou/zulip,timabbott/zulip,rishig/zulip,SmartPeople/zulip,vaidap/zulip,synicalsyntax/zulip,verma-varsha/zulip,brainwane/zulip,Galexrt/zulip,aakash-cr7/zulip,jrowan/zulip,j831/zulip,susansls/zulip,verma-varsha/zulip,jrowan/zulip,shubhamdhama/zulip,jackrzhang/zulip,jackrzhang/zulip,souravbadami/zulip,dhcrzf/zulip