BUG-1166: do not import BundleContext

As it turns out, the entire import is only needed to get the canonical
class name. Replace the import with a static string, leaving the
dependency behind.

Change-Id: Ia300738b2d2351404eae1b2da20a0c6bc41ecd22
Signed-off-by: Robert Varga <rovarga@cisco.com>