upgrade-zulip: Only remove zproject/local_settings.py if symlink.
upgrade-zulip: Only remove zproject/local_settings.py if symlink.

This fixes a problem where if we're deploying from git,
local_settings.py ends up part of the diff in the deployed git
repository.

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