rz_core: remove unused code
rz_core: remove unused code

Rhizi/rhizi,Rhizi/rhizi,yuvadm/rhizi,cben/rhizi,tlevine/rhizi,ozFri/rhizi,shlomif/rhizi,tlevine/rhizi,shlomif/rhizi,tlevine/rhizi,cben/rhizi,tlevine/rhizi,shlomif/rhizi,cben/rhizi,ozFri/rhizi,ozFri/rhizi,shlomif/rhizi,Rhizi/rhizi,yuvadm/rhizi,yuvadm/rhizi,cben/rhizi,ozFri/rhizi,yuvadm/rhizi,Rhizi/rhizi