Updating contributor-comms team members (#8116)

* Updating contributor-comms team members

* Removing mbianchidev

Author: Chris "Not So" Short

communication/slack-config/usergroups.yaml

@@ -27,17 +27,13 @@ usergroups:
       - sig-contribex
       - sig-contribex-comms
     members:
-      - AvineshTripathi
       - chrisshort
       - fsmunoz
       - fykaa
       - hii-arpit
-      - iancoldwater
       - kaslin
       - mfahlandt
-      - natalisucks
       - nitishfy
-      - paris
       - sandeepkanabar
       - sandipanpanda
       - sreeram-venkitesh