Removed unused local variables (PMD report).

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Add Mark Vine to contributors.
Removed more unused local variables (PMD report).

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Removed unnecessary import from the same package.

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Simplified fully qualified names where an existing import is present (PMD Reports).

Signed-off-by: John May <john.wilkinsonmay@gmail.com>