Removed the karaf.version property.
Removed the karaf.version property.

The karaf.version property is defined in pom.xml of the odlparent. To be
well-integrated with other projects, we should not overwrite it here.

Change-Id: I96b7fae4fa0f0d186c5730eb5c5f1e604aa3d4ad
Signed-off-by: Hideyuki Tai <87b3ecc686f9d387127fb9c6b83e75a0e66a7ae8@necam.com>

opendaylight/nic