Pbap disconnect durring connect

Durring a connect call disconnect from all other pbap devices rather
than from the device you are trying to connect to.

bug: 28406739
Change-Id: Ic0b651f32a0da18950fbc190b1d4503d69ebd203
(cherry picked from commit bdd24942e47811ffe6bb9814934e6b08a8190e7e)