doc/generate_rst.py: silent useless warnings

doc/generate_rst.py

@@ -25,6 +25,8 @@ modules = glob.glob(join(directory, '*.py')) + glob.glob(join(directory, '*.pyc'
 modules = set(basename(filename).split('.')[0] for filename in modules)
 modules = set(name for name in modules if not name.startswith('_'))
 
+import warnings
+warnings.simplefilter('ignore', DeprecationWarning)
 
 def generate_rst_for_module(module, do=True):
     rst_filename = 'gevent.%s.rst' % module