sig-testing: drop Katharine from test-infra teams
We miss you! But it's probably time to do this
@@ -65,7 +65,6 @@ teams:
- chases2
- cjwagner
- e-blackwelder
- - Katharine
- listx
- michelle192837
- mpherman2
@@ -81,7 +80,6 @@ teams:
- BenTheElder
- cjwagner
- ixdy
- - Katharine
- krzyzacy
- michelle192837
- stevekuznetsov
