RTP refactoring. Remove separate CN routines as it is nothing more than 1st order EM/PADE

git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@13521 bac0169d-1eea-4375-b5f6-f89d2ced9994
bug fix threaded case


git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@13522 bac0169d-1eea-4375-b5f6-f89d2ced9994
Prettify


git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@13523 bac0169d-1eea-4375-b5f6-f89d2ced9994