[identity] Add function to remove device from list
Summary:
Similiar to D10220 but for removing a device from the list.
Depends on D10304
Test Plan:
Repeated test plan from D10220 then called this function and verified a new list was generated without the device.
Called the function twice - got DeviceNotFound error during second call, as expected.
Calling Logout RPC has the same effect.
Reviewers: varun, michal
Reviewed By: varun
Subscribers: ashoat, tomek
Differential Revision: https://phab.comm.dev/D10397