user docs: Remove admin-only stream management from member docs.
user docs: Remove admin-only stream management from member docs.

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