Fix lgtm errors in python codes.

tools/create_package.py

@@ -1,10 +1,8 @@
 import os
 import sys
 import shutil
-import subprocess
 import zipfile
 import json
-import re
 
 from lib import tools_lib as Tools
 
@@ -62,7 +60,6 @@ def CreateDestinationDir (config, rootDir, websiteDir, version):
 		'o3dv/o3dv.website.min.js'
 	]
 	
-	linePrefix = '\t'
 	for htmlFileName in ['index.html', 'embed.html', os.path.join ('info', 'index.html')]:
 		htmlFilePath = os.path.join (websiteDir, htmlFileName)
 		replacer = Tools.TokenReplacer (htmlFilePath, False)

tools/generate_test_obj.py

@@ -1,7 +1,5 @@
 import os
 import sys
-import subprocess
-import json
 import math
 
 from lib import tools_lib as Tools

tools/optimize_svg_files.py

@@ -1,7 +1,5 @@
 import os
 import sys
-import subprocess
-import json
 
 from lib import tools_lib as Tools
 
@@ -11,5 +9,6 @@ def Main (argv):
 	imagesPath = os.path.abspath (os.path.join ('..', 'website', 'assets', 'images'))
 	for i in range (0, 5):
 		Tools.RunCommand (['svgo', '-r', imagesPath])
+	return 0
 
 sys.exit (Main (sys.argv))

tools/update_includes.py

@@ -1,6 +1,5 @@
 import os
 import sys
-import subprocess
 import json
 
 from lib import tools_lib as Tools
@@ -30,5 +29,7 @@ def Main (argv):
 		replacer.ReplaceTokenFileLinks ('<!-- importer start -->', '<!-- importer end -->', importerFiles, None)
 		replacer.ReplaceTokenFileLinks ('<!-- website start -->', '<!-- website end -->', websiteFiles, None)
 		replacer.WriteToFile (htmlFilePath)
+	
+	return 0
 
 sys.exit (Main (sys.argv))