Delete AppBarLayout from fragment layouts

[starboi02]

Issue Description

• Delete AppBarLayout and Toolbar from leaderboard.xml, mentor.xml, projects.xml, and participants.xml.

Note

• Before starting work on this issue, update your main branch with the main branch of the main repository.
• Create a new branch from the main working on this issue and give it a meaningful name.
• Note that you must have completed the following issues to claim this issue:
  • Setup the Project on your Local Machine #1
  • Add your name to the list of Contributors (Mandatory) #10
  • Star this Repository #80
• If the above issues have not been completed, this issue will not be assigned to you.

[shashwat-mittal]

Claim