remove unused routine


git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@12649 bac0169d-1eea-4375-b5f6-f89d2ced9994
OMP parallel checksum


git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@12650 bac0169d-1eea-4375-b5f6-f89d2ced9994