Revert "adb: close ep0 on disconnection." am: 57de0514f0
am: 74521c93de

* commit '74521c93de953e63ce004b49f837e253038b601c':
  Revert "adb: close ep0 on disconnection."

Change-Id: I04ef6d09a6d53e3930db3459cad9cfde19761b6f