Revert "adb: close ep0 on disconnection."
am: 57de0514f0

* commit '57de0514f0aeabe092ce3a122402721c93a70a2c':
  Revert "adb: close ep0 on disconnection."

Change-Id: I5a5b577579a9e00b814ce956461e0c983cfb47ba