IWLAN: Disable DEVICE_IDENTITY signaling

- Telus carrier requests the DEVICE_IDENTITY but cannot
parse the IKE_AUTH response with the value set.
- Disabled until we can sort this out with the carrier.

Bug: 231499876
Test: make
Change-Id: Iff607151d5b2c2d5e4340e339f0ec456197da956
2 files changed