Don't want to work - best way to suggest this to my manager

I recently joined Cisco India as an intern. However, they are giving me lots of work that seems irrelevant to me. My manager thinks that I want to join them full time after my intern finishes, so she is making me part of all the team meetings and all. On the contrary, I have a full time offer from FAANG, so don't want full time offer from Cisco, it's just that I have to complete this internship as a part of my course requirement.

Is there any way to highlight to my manager that I am not interested in joining Cisco, so don't make me a part of all the bullshit meetings and allot me minimal (or no work).