maven: Remove parallel option for maven build
maven: Remove parallel option for maven build

The maven build has been flaky. Removing this to see if it stabilizes.

Signed-off-by: BJ Hargrave <3d26bb3930946e3370762d769a073cece444c2d8@bjhargrave.com>

psoreide/bnd,psoreide/bnd,psoreide/bnd