Reset internet requests when SIM is removed

- When SIM is plugged out in Attached state, data state machine
  goes from Attached -> Idle state and does not release the
  requests. As a result, the executed flag of internet network
  request remains false and ALLOW_DATA true is not sent down
  when SIM is plugged back in same slot

- Fix this by resetting INTERNET network request when SIM is
  removed. With the fix, when sim is plugged back into the same
  slot and data attaches, state machine will move correctly
  from Idle->Attaching

CRs-Fixed: 928537

Change-Id: I3ac780f4a7c2114b007107422b3c6cfc7142892e