Make browser docs owned by k6-core (#2035)

Author: andrewslotin

CODEOWNERS

@@ -6,10 +6,6 @@
 /docs/sources/k6 @grafana/k6-core @heitortsergent
 /docs/sources/k6-studio @grafana/k6-Studio @heitortsergent
 
-# k6 Browser documentation
-/docs/sources/k6/*/using-k6-browser @grafana/k6-browser @heitortsergent
-/docs/sources/k6/*/javascript-api/k6-browser @grafana/k6-browser @heitortsergent
-
 # k6 Operator documentation
 /docs/sources/k6/*/set-up/set-up-distributed-k6 @yorugac @heitortsergent
 /docs/sources/k6/*/shared/k6-operator @yorugac @heitortsergent