A bit of code cleanup. Nothing should be changed at all functionally.

tools/cleanup_cache.py

@@ -285,4 +285,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    main()

tools/validate_pep8.py

@@ -362,4 +362,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    main()

tools/validate_release.py

@@ -456,4 +456,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    main()

tools/validate_syntax.py

@@ -233,4 +233,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    main()