left_sidebar: Increase font size of STREAM header icons.
left_sidebar: Increase font size of STREAM header icons.

Font size increased from 13px to 14px to allow users to click easily;
this was already the default, so we can just delete the line.

eeshangarg/zulip,kou/zulip,zulip/zulip,kou/zulip,zulip/zulip,rht/zulip,kou/zulip,rht/zulip,rht/zulip,andersk/zulip,punchagan/zulip,kou/zulip,eeshangarg/zulip,zulip/zulip,zulip/zulip,andersk/zulip,eeshangarg/zulip,andersk/zulip,rht/zulip,punchagan/zulip,eeshangarg/zulip,kou/zulip,hackerkid/zulip,punchagan/zulip,eeshangarg/zulip,punchagan/zulip,hackerkid/zulip,punchagan/zulip,eeshangarg/zulip,zulip/zulip,andersk/zulip,hackerkid/zulip,hackerkid/zulip,punchagan/zulip,zulip/zulip,andersk/zulip,andersk/zulip,punchagan/zulip,kou/zulip,hackerkid/zulip,andersk/zulip,hackerkid/zulip,zulip/zulip,rht/zulip,hackerkid/zulip,rht/zulip,kou/zulip,rht/zulip,eeshangarg/zulip