Clean external header file
Clean external header file

EricKTCheung/davix,cern-it-sdc-id/davix,cern-it-sdc-id/davix,EricKTCheung/davix,cern-it-sdc-id/davix,EricKTCheung/davix,cern-it-sdc-id/davix,EricKTCheung/davix