cuttlefish: Don't start supplicant with interfaces

Interfaces will be created by framework when needed.

Note: This is already done for other device platforms (See ag/3479861 for
example).

Intentionally empty. This was a pi specific change

Bug: 69426063
Test: Presubmit tests should pass with the linked CL's. It was failing
before this CL.

Change-Id: I85c54097ba7ac17af114e0caef7e21f659432a94