Remove "Please select..." & Remove dropdown duplicate items

[frimpongopoku]

Summary / Highlights

Details (Give details about what this PR accomplishes, include any screenshots etc)

Testing Steps (Provide details on how your changes can be tested)

Requirements (place an x in each [ ])

• [x] I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• [x] I've tested my changes manually.
• [ ] I've added unit tests to my PR.

Transparency (Project board)

• [x] I've given my PR a meaningful title.
• [ ] I linked this PR to the relevant issue.
• [ ] I moved the linked issue from the "Sprint backlog" to "In progress" when I started this.
• [ ] I moved the linked issue to "QA Verification" now that it is ready to merge.

Description

• [X] Cadmins will no long see "Please select an option" when they are selecting communities to share to on teams page
• [X] Drodpowns also wont show duplicate items when admins load more