power: smb5 : Remove HOST mode notification on role switch failure handler

As part of role switch failure handling charger driver notifies
the last state (DEVICE/HOST) to USB driver, remove HOST mode
notification as this is done as part of cc_attach interrupt handling.

Change-Id: I09f39f9f804c9fb5a2af98be344e6f1674a50377
Signed-off-by: Kavya Nunna <knunna@codeaurora.org>