tree a3ebf18bb1ae64050ce9dee4dbb7f467c29c2d1d
parent 1ffa46b5b351a7bbcf9c2b3bb979c130d3125e29
author Andrea Campanella <andrea@onlab.us> 1459557012 -0700
committer Gerrit Code Review <gerrit@onlab.us> 1459780628 +0000

Removing listeners from deviceService at deactivation of Group and Flow managers to avoid NPE

Change-Id: Ia7526913e4f50b4c49ce9f2ae9ddf85c2db77a3a