931 fix selflock bug

[DanielVajnagi]

dev

Resolves

931

Code reviewers

• [x] @alexy78

Second Level Review

• [ ] @loqimean

  Summary of issue

Admin can ban himself

Summary of change

Removed this function

CHECK LIST

• [x] СI passed
• [x] Сode coverage >=95%
• [x] PR is reviewed manually again (to make sure you have 100% ready code)
• [x] All reviewers agreed to merge the PR
• [x] I've checked new feature as logged in and logged out user if needed
• [x] PR meets all conventions

[codecov[bot]]

Codecov Report

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

Project coverage is 91.21%. Comparing base (3bff2f0) to head (1fd7a03). Report is 9 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #937 +/- ## =========================================== + Coverage 91.16% 91.21% +0.05% =========================================== Files 70 70 Lines 973 979 +6 =========================================== + Hits 887 893 +6 Misses 86 86 ```

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