Revert "BT: Multi HF support in Settings App."

This reverts commit 7bbd90528064516a4aae200731a7fd60acd09192.
Display BTH connected status correctly

This patch removes incorrect condition.
(to not use LocalBluetoothProfile#isPreferred())
This condition uses the priority that already disconnected profile,
so this codition always returns false.

To verify this issue:
1. Turn on Bluetooth.
2. Pair and connect to BTH(A2DP/HFP)
3. The display now says "Connected"
3. Disconnect HFP profile
4. The display still says "Connected" but it should say "Connected (no phone)"

Change-Id: I9e2bfa6d23bf1be7587c9556b4b05459d02c4817
Bluetooth: Ignore the second button if one already pressed

Ignore the second buton if already one button is pressed,
this case comes when user is trying to press the both
cancel and ok for the pairing dialog.

Change-Id: I77516ec59a972b4451bb8cff69645f7b9089497f
CRs-Fixed: 624285
Fixes error message during pairing of HOGP devices

When incorrect pin key is entered by user in
the pairing pop up while pairing with a HOGP
device, no error message regarding the failure
is displayed to the user.

CRs-fixed: 618905
Change-Id: I1a5a8baf9ef6c71bf285a28b3e1839fe5ddbca95
Bluetooth: Increase allowed duration to connect to a profile

This patch increases the duration allowed between the first device
connection attempt (immidiately after bonding) and profile connection
after service discovery from 5 seconds to 30 seconds to allow
HOGP connections for slow connection conditions.

Change-Id: I5b17bd0bd2b560709e6e67e2d83f9bca7ea2509d
CRs-Fixed: 612105