Remove whole directories:
       mkdir -p /scratch/$USER/gfalFS/T3_CH_PSI
       mkdir -p /scratch/$USER/gfalFS/T2_CH_CSCS
       gfalFS -s /scratch/$USER/gfalFS/T3_CH_PSI srm://t3se01.psi.ch
       rm -rfv /scratch/$USER/gfalFS/T3_CH_PSI/pnfs/....whatyouwannaremove
       gfalFS_umount /scratch/$USER/gfalFS/T3_CH_PSI
       gfalFS_umount /scratch/$USER/gfalFS/T2_CH_CSCS
Tier3 path
      srm://t3se01.psi.ch:8443/srm/managerv2?SFN=/pnfs/psi.ch/cms/trivcat/store/user/thaarres/