Reverts "Add RBAC permissions for getting knative version"

What does this MR do?

Reverts:

• 1408c633 (!20244 (merged))
• b452d6c9 (subsequent improvement)
• f0631507 (partial fix)

Fundamentally we should not be doing network calls in the unmet? method as this method can be called within rails process. More importantly, this method is called during state transitions which means network calls increase the chances of exceptions dramatically.

Related issues: #55246 (closed) #118431 (closed)

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

QA

See !22560 (comment 268372219)

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers