EVEREST-622 remove deprecated commands

[recharte]

EVEREST-622 remove deprecated commands

Problem: EVEREST-622

Remove deprecated commands:

• install operators
• delete cluster

CHECKLIST

Jira

• [x] Is the Jira ticket created and referenced properly?

Tests

• ~[ ] Is an Integration test/test case added for the new feature/change?~
• ~[ ] Are unit tests added where appropriate?~

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (bde67b2) 5.33% compared to head (4c096ef) 5.33%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #269 +/- ## ===================================== Coverage 5.33% 5.33% ===================================== Files 13 13 Lines 2850 2850 ===================================== Hits 152 152 Misses 2671 2671 Partials 27 27 ```

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