renumber-migrations: Fix unnecessary prompt.
renumber-migrations: Fix unnecessary prompt.

The tool already knows the answer anyway.

Fixes #6157.

synicalsyntax/zulip,mahim97/zulip,rht/zulip,verma-varsha/zulip,eeshangarg/zulip,rishig/zulip,punchagan/zulip,synicalsyntax/zulip,kou/zulip,mahim97/zulip,timabbott/zulip,jackrzhang/zulip,brockwhittaker/zulip,jackrzhang/zulip,eeshangarg/zulip,amanharitsh123/zulip,hackerkid/zulip,zulip/zulip,mahim97/zulip,brainwane/zulip,eeshangarg/zulip,synicalsyntax/zulip,hackerkid/zulip,kou/zulip,dhcrzf/zulip,amanharitsh123/zulip,mahim97/zulip,punchagan/zulip,brockwhittaker/zulip,shubhamdhama/zulip,verma-varsha/zulip,Galexrt/zulip,rht/zulip,dhcrzf/zulip,shubhamdhama/zulip,andersk/zulip,rht/zulip,Galexrt/zulip,hackerkid/zulip,rishig/zulip,dhcrzf/zulip,hackerkid/zulip,zulip/zulip,showell/zulip,synicalsyntax/zulip,brainwane/zulip,andersk/zulip,Galexrt/zulip,punchagan/zulip,brainwane/zulip,synicalsyntax/zulip,andersk/zulip,brainwane/zulip,mahim97/zulip,eeshangarg/zulip,rishig/zulip,hackerkid/zulip,rishig/zulip,rht/zulip,timabbott/zulip,timabbott/zulip,rishig/zulip,synicalsyntax/zulip,dhcrzf/zulip,rht/zulip,zulip/zulip,andersk/zulip,amanharitsh123/zulip,jackrzhang/zulip,andersk/zulip,amanharitsh123/zulip,jackrzhang/zulip,brainwane/zulip,Galexrt/zulip,brockwhittaker/zulip,rishig/zulip,kou/zulip,brockwhittaker/zulip,punchagan/zulip,timabbott/zulip,shubhamdhama/zulip,dhcrzf/zulip,eeshangarg/zulip,shubhamdhama/zulip,eeshangarg/zulip,mahim97/zulip,showell/zulip,andersk/zulip,eeshangarg/zulip,timabbott/zulip,timabbott/zulip,punchagan/zulip,amanharitsh123/zulip,zulip/zulip,punchagan/zulip,brockwhittaker/zulip,shubhamdhama/zulip,amanharitsh123/zulip,tommyip/zulip,jackrzhang/zulip,synicalsyntax/zulip,showell/zulip,brockwhittaker/zulip,dhcrzf/zulip,shubhamdhama/zulip,tommyip/zulip,punchagan/zulip,rht/zulip,kou/zulip,hackerkid/zulip,tommyip/zulip,kou/zulip,verma-varsha/zulip,showell/zulip,verma-varsha/zulip,Galexrt/zulip,jackrzhang/zulip,showell/zulip,tommyip/zulip,rht/zulip,tommyip/zulip,zulip/zulip,jackrzhang/zulip,brainwane/zulip,showell/zulip,hackerkid/zulip,rishig/zulip,Galexrt/zulip,shubhamdhama/zulip,zulip/zulip,tommyip/zulip,timabbott/zulip,kou/zulip,tommyip/zulip,zulip/zulip,dhcrzf/zulip,kou/zulip,verma-varsha/zulip,brainwane/zulip,Galexrt/zulip,andersk/zulip,verma-varsha/zulip,showell/zulip