Revert "USB: android: Avoid re-enabling the same configuration"

Commit d9b18977 doesn't allow re-enumeration of USB default composition
on bus reset. if adb close and adb open has been called within 1 second
of duration. with adb usb command, it restarts the adb into USB mode after
closing the adb device and re-opening the same within 1 second. To the
user it looks as if command is stuck. Terminating adb usb based command
prompt, killing adb server and doing adb shell again gets the adb
functionality. Here user doesn't see any USB re-enumeration with it. Hence
revert commit d9b18977 which doesn't block the adb usb command and
re-enumeration of USB.

CRs-Fixed: 385973
Change-Id: I4a324141a8d53601cf59cf9451a218e8ec5a4540
Signed-off-by: Mayank Rana <mrana@codeaurora.org>