Fix RFCOMM Rx speed of transfer

Fix RFCOMM Rx speed of transfer

Use Case:
1. OPP Rx use case on the DUT Side
2. Transfer 10Mb+ of file from remote to DUT
3. Observe speeds over RFCOMM (expected 1.5Mbps+)

Failure:
Actual speeds lesser than 1.5Mbps

Root Cause:
Rx bottlenecks seen due to frequent timer operation
during incoming data on RFCOMM

Fix:
BUSY and IDLE states of BT Power manager are already
handled inside the stack and no need to explicitly set
IDLE and BUSY states from JV layer anymore.

Bug: 22487461
Change-Id: Icdc25c52103d6a849cc6e12656d9c69f5e152b05