Delete empty rdiff doc placeholder
Delete empty rdiff doc placeholder

librsync/librsync,Salamek/librsync,yrgoldteeth/librsync,sourcefrog/librsync,yrgoldteeth/librsync,Salamek/librsync,dbaarda/librsync,Salamek/librsync,yrgoldteeth/librsync,dbaarda/librsync,sourcefrog/librsync,dbaarda/librsync,librsync/librsync,librsync/librsync,librsync/librsync,yrgoldteeth/librsync,dbaarda/librsync,sourcefrog/librsync,sourcefrog/librsync