docs: Remove shortcuts list documentation of drafts navigation.
docs: Remove shortcuts list documentation of drafts navigation.

These are fairly intuitive given how navigation works elsewhere, and
not having them here helps avoid things feeling intimidating.

showell/zulip,hackerkid/zulip,rht/zulip,synicalsyntax/zulip,punchagan/zulip,kou/zulip,Galexrt/zulip,hackerkid/zulip,ryanbackman/zulip,punchagan/zulip,tommyip/zulip,punchagan/zulip,eeshangarg/zulip,vabs22/zulip,brockwhittaker/zulip,rht/zulip,ryanbackman/zulip,punchagan/zulip,brainwane/zulip,mahim97/zulip,hackerkid/zulip,zulip/zulip,dhcrzf/zulip,rht/zulip,shubhamdhama/zulip,jrowan/zulip,tommyip/zulip,rht/zulip,brockwhittaker/zulip,verma-varsha/zulip,hackerkid/zulip,amanharitsh123/zulip,showell/zulip,zulip/zulip,rishig/zulip,punchagan/zulip,andersk/zulip,dhcrzf/zulip,showell/zulip,jackrzhang/zulip,kou/zulip,andersk/zulip,rishig/zulip,vaidap/zulip,christi3k/zulip,amanharitsh123/zulip,showell/zulip,j831/zulip,jackrzhang/zulip,jphilipsen05/zulip,brockwhittaker/zulip,punchagan/zulip,verma-varsha/zulip,synicalsyntax/zulip,vaidap/zulip,dhcrzf/zulip,vaidap/zulip,showell/zulip,kou/zulip,mahim97/zulip,vabs22/zulip,eeshangarg/zulip,amanharitsh123/zulip,shubhamdhama/zulip,eeshangarg/zulip,kou/zulip,vabs22/zulip,brockwhittaker/zulip,timabbott/zulip,jphilipsen05/zulip,tommyip/zulip,showell/zulip,ryanbackman/zulip,jackrzhang/zulip,dhcrzf/zulip,rht/zulip,j831/zulip,christi3k/zulip,jphilipsen05/zulip,rishig/zulip,Galexrt/zulip,vabs22/zulip,jrowan/zulip,timabbott/zulip,andersk/zulip,j831/zulip,mahim97/zulip,andersk/zulip,andersk/zulip,andersk/zulip,rishig/zulip,christi3k/zulip,hackerkid/zulip,dhcrzf/zulip,amanharitsh123/zulip,timabbott/zulip,punchagan/zulip,shubhamdhama/zulip,mahim97/zulip,showell/zulip,j831/zulip,jackrzhang/zulip,ryanbackman/zulip,zulip/zulip,shubhamdhama/zulip,jackrzhang/zulip,zulip/zulip,jphilipsen05/zulip,tommyip/zulip,synicalsyntax/zulip,verma-varsha/zulip,brainwane/zulip,Galexrt/zulip,vabs22/zulip,vaidap/zulip,brockwhittaker/zulip,Galexrt/zulip,jrowan/zulip,vabs22/zulip,kou/zulip,zulip/zulip,jphilipsen05/zulip,synicalsyntax/zulip,rishig/zulip,j831/zulip,jackrzhang/zulip,timabbott/zulip,verma-varsha/zulip,vaidap/zulip,Galexrt/zulip,eeshangarg/zulip,verma-varsha/zulip,brainwane/zulip,dhcrzf/zulip,Galexrt/zulip,timabbott/zulip,ryanbackman/zulip,synicalsyntax/zulip,amanharitsh123/zulip,verma-varsha/zulip,christi3k/zulip,christi3k/zulip,andersk/zulip,ryanbackman/zulip,jackrzhang/zulip,eeshangarg/zulip,brainwane/zulip,mahim97/zulip,shubhamdhama/zulip,timabbott/zulip,kou/zulip,vaidap/zulip,hackerkid/zulip,rht/zulip,synicalsyntax/zulip,tommyip/zulip,hackerkid/zulip,christi3k/zulip,shubhamdhama/zulip,brockwhittaker/zulip,j831/zulip,brainwane/zulip,shubhamdhama/zulip,eeshangarg/zulip,brainwane/zulip,tommyip/zulip,jrowan/zulip,synicalsyntax/zulip,kou/zulip,tommyip/zulip,zulip/zulip,brainwane/zulip,jrowan/zulip,amanharitsh123/zulip,jrowan/zulip,timabbott/zulip,Galexrt/zulip,eeshangarg/zulip,zulip/zulip,rht/zulip,mahim97/zulip,jphilipsen05/zulip,rishig/zulip,rishig/zulip,dhcrzf/zulip