[7.3] [DOCS] Removes reference to IRC (#57245)#57280

Merged

gchaps merged 1 commit intoelastic:7.3from gchaps:backport/7.3/pr-57245

Feb 11, 2020

+3-7

Commits on Feb 10, 2020

[DOCS] Removes reference to IRC (elastic#57245 )
gchaps
committed