Update GroundFilter.py

Author: spono

python/plugins/processing/algs/lidar/fusion/GroundFilter.py

@@ -26,7 +26,6 @@
 __revision__ = '$Format:%H$'
 
 import os
-import subprocess
 from processing.core.parameters import ParameterBoolean
 from processing.core.parameters import ParameterFile
 from processing.core.parameters import ParameterNumber
@@ -72,5 +71,3 @@ def processAlgorithm(self, progress):
             FusionUtils.createFileList(files)
             commands.append(FusionUtils.tempFileListFilepath())
         FusionUtils.runFusion(commands, progress)
-        p = subprocess.Popen(commands, shell=True)
-        p.wait()