While on the mac version of the remote desktop software, and maximized I have 2 "File" menu bars, I was wondering if one of these can be hidden.

As you can see, the same menu options are listed in the line directly above it.
Hello,
You can achieve this by switching to the classic user interface:
Click on the "Remote Desktop Manager" tab.
Select "Preferences.
Change the user interface to "Classic."
If you have any additional questions, concerns, or require further support, please let me know, and I'll be more than happy to help.
Best regards,
Carl Marien