ppapi: generators: strip trailing blank lines

Newer pylint warns when files have trailing blank lines.  Trim them.

Bug: 866772
Change-Id: I20739c2086c1fac0a802c07e9f4baa5f8bbf4291
Reviewed-on: https://chromium-review.googlesource.com/1148000Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577582}

ppapi/generators/idl_ast.py

@@ -178,5 +178,3 @@ class IDLAst(IDLNode):
       errors = filenode.GetProperty('ERRORS')
       if errors:
         self.errors += errors
-
-

ppapi/generators/idl_c_header.py

@@ -371,4 +371,3 @@ def main(args):
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))
-

ppapi/generators/idl_namespace.py

@@ -246,4 +246,3 @@ def Main(args):
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv[1:]))
-

ppapi/generators/idl_node.py

@@ -444,4 +444,3 @@ def Main():
 
 if __name__ == '__main__':
   sys.exit(Main())
-

ppapi/generators/idl_parser.py

@@ -1293,4 +1293,3 @@ def Main(args):
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv[1:]))
-

ppapi/generators/idl_propertynode.py

@@ -111,4 +111,3 @@ def Main():
 
 if __name__ == '__main__':
   sys.exit(Main())
-

ppapi/generators/idl_release.py

@@ -353,4 +353,3 @@ def Main(args):
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv[1:]))
-

ppapi/generators/idl_tests.py

@@ -42,4 +42,3 @@ def main(args):
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))
-