Remove PropertyPair

This holder is unused, so remove it, reducing clutter.

Change-Id: Ib808582faf11cfa9937e76a7d025ed2a66a5becf
Signed-off-by: Robert Varga <rovarga@cisco.com>
Do not use deprecated ClassLoaderUtils

Migrates to the class provided from the util package instead.

Change-Id: I988c4cc0d04062780ebd842ab596604b0c7cf287
Signed-off-by: Robert Varga <rovarga@cisco.com>