Unverified Role Removal post using '/verify'

[Shenoy07]

Issue Description

When we use the '/verify' command and the verification is successful we have to manually remove the unverified tag from the user's respective profile.

Expected Behavior

When '/verify' command is used and the verification is successful, the 'unverified' role for the user should automatically be removed.

Current Behavior

Currently, when we run the above steps the 'unverified' role has to be removed manually.

Screenshots

Reproducibility

• [x] This issue is reproducible
• [ ] This issue is not reproducible

Steps to Reproduce

1. We need a new member to join RDS(preferably not a returning user)
2. Ask them to run the '/verify' command
3. And we can see that even if the verification is successful, the 'unverified tag' doesn't go away.

Severity/Priority

• [ ] Critical
• [ ] High
• [x] Medium
• [ ] Low

Additional Information

Checklist

• [x] I have read and followed the project's code of conduct.
• [x] I have searched for similar issues before creating this one.
• [x] I have provided all the necessary information to understand and reproduce the issue.
• [x] I am willing to contribute to the resolution of this issue.