Remove error status check in GKE cluster on read

[rileykarson]

Actually remove the last bad check. I'm gonna cherrypick this to the release as it should have been part of #3077 if it doesn't make it in, since I thought this was handled already a long time ago and editing changelog messages is hard.

Release Note Template for Downstream PRs (will be copied)

container: `google_container_cluster` will allow importing / updating / deleting clusters in error states

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 1 file changed, 3 deletions(-))
Terraform Beta: Diff ( 1 file changed, 3 deletions(-))