Merge changes I5f284c8c,I5f1afa5e,I5e7478e9,I9c717be1,Ie8d7e20a, ...

* changes:
  read_inq_tx_power_timer is never used
  p_inq_tx_power_cmpl_cb is always null
  Remove dead code
  btm_process_remote_name does nothing interesting if remote name not active
  btm_inq_vars.scan_type is not useful
  Remove useless variable
  Status is set but not used
  Replace with equivalent expression
  Remove unnecessary variable
  state is already set to this value higher in this function
  Flatten btm_initiate_inquiry
  BTM_BLE_LIMITED_INQUIRY is never used
  BTM_LIMITED_INQUIRY is never set
  Delete BTM_CancelPeriodicInquiry, it's unused and does nothing
  BTM_PERIODIC_INQUIRY_ACTIVE is never set
  This condition will never be met
  Replace equivalent expression
  Don't report illegal value for something uncontrollable
  reduce duplicate mask setting
  p_inq->inqparms.mode & BTM_BLE_INQUIRY_MASK is always true