Drop mentions to inactive community meetup (#1704)

Author: dprotaso

README.md

@@ -69,10 +69,6 @@ but it helps if you follow it as you write your tutorial.
 
 ## Meetings and work groups
 
-Knative has public and recorded monthly community meetings. You can see the
-agenda and links to previous recordings
-[here](https://docs.google.com/document/d/1o0ENlHpv5nYPOznlbDc9xzNcwTqtxZrmPAVZLoWRHyE/edit#heading=h.yzvtyg3omrak).
-
 Each project has one or more
 [working groups](./working-groups/WORKING-GROUPS.md) driving the project, and
 Knative has a single