css: Remove redundant `#organization` from `settings.scss`.
css: Remove redundant `#organization` from `settings.scss`.

This commit removes the redundant `#organization` from settings.scss as
organization id no longer exists.

andersk/zulip,tommyip/zulip,zulip/zulip,timabbott/zulip,andersk/zulip,andersk/zulip,eeshangarg/zulip,punchagan/zulip,showell/zulip,synicalsyntax/zulip,brainwane/zulip,rishig/zulip,brainwane/zulip,shubhamdhama/zulip,rishig/zulip,timabbott/zulip,tommyip/zulip,tommyip/zulip,synicalsyntax/zulip,showell/zulip,kou/zulip,timabbott/zulip,hackerkid/zulip,brainwane/zulip,rht/zulip,shubhamdhama/zulip,rht/zulip,kou/zulip,eeshangarg/zulip,zulip/zulip,rishig/zulip,punchagan/zulip,hackerkid/zulip,brainwane/zulip,tommyip/zulip,kou/zulip,timabbott/zulip,rishig/zulip,punchagan/zulip,hackerkid/zulip,zulip/zulip,zulip/zulip,synicalsyntax/zulip,showell/zulip,eeshangarg/zulip,tommyip/zulip,showell/zulip,synicalsyntax/zulip,tommyip/zulip,rishig/zulip,eeshangarg/zulip,shubhamdhama/zulip,brainwane/zulip,synicalsyntax/zulip,rht/zulip,hackerkid/zulip,shubhamdhama/zulip,kou/zulip,brainwane/zulip,zulip/zulip,eeshangarg/zulip,kou/zulip,hackerkid/zulip,zulip/zulip,hackerkid/zulip,punchagan/zulip,rht/zulip,andersk/zulip,rht/zulip,kou/zulip,shubhamdhama/zulip,shubhamdhama/zulip,synicalsyntax/zulip,tommyip/zulip,punchagan/zulip,timabbott/zulip,hackerkid/zulip,rishig/zulip,shubhamdhama/zulip,kou/zulip,showell/zulip,timabbott/zulip,brainwane/zulip,rishig/zulip,zulip/zulip,rht/zulip,eeshangarg/zulip,andersk/zulip,showell/zulip,andersk/zulip,timabbott/zulip,rht/zulip,showell/zulip,eeshangarg/zulip,punchagan/zulip,punchagan/zulip,synicalsyntax/zulip,andersk/zulip