bug: Comments can be added but can't be deleted : PROBLEM SOLVED

[sachinninave]

PR Fixes: #510

• 1 only admin can delete comment
• 2 so , disabled deletion for non admin user

Resolves #[Issue Number if there]

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [x] I assure there is no similar/duplicate pull request regarding same issue