Fix #3873: Failure of deprecation warning mechanism of `sphinx.util.compat.Directive`

CHANGES

@@ -33,6 +33,8 @@ Bugs fixed
 * #3881: LaTeX figure floated to next page sometimes leaves extra vertical
   whitespace
 * #3885: duplicated footnotes raises IndexError
+* #3873: Failure of deprecation warning mechanism of
+  ``sphinx.util.compat.Directive``
 
 Testing
 --------

sphinx/util/compat.py

@@ -38,7 +38,7 @@ class _DeprecationWrapper(object):
             warnings.warn("sphinx.util.compat.%s is deprecated and will be "
                           "removed in Sphinx 1.7, please use the standard "
                           "library version instead." % attr,
-                          RemovedInSphinx17Warning, stacklevel=2)
+                          RemovedInSphinx17Warning)
             return self._deprecated[attr]
         return getattr(self._mod, attr)