tutorial: Remove unnecessary actions.
tutorial: Remove unnecessary actions.

* .screen is no longer being changed by other parts of the tutorial
* first_run_message we don't need, since we're guaranteed to have a message.
* Changing to #home and narrow.deactivate are not needed since we're
  immediately narrowing to PM with welcome-bot.

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