Remove AddOnStateChangedCallback from HTTP server

Implementation should have http server running before creating
weave::Device

BUG:24267885
Change-Id: Ia53cd3f669eea80120a5e8673fe8e549a2c42ccf
Reviewed-on: https://weave-review.googlesource.com/1271
Reviewed-by: Alex Vakulenko <avakulenko@google.com>
9 files changed
tree: b81612d0929938bcb28a026c535c94f69adbf49a
  1. libweave/