Drop the obscure issue warning, and instead make the guidance stronger.

ops/model.py

@@ -1514,22 +1514,17 @@ def revoke(self, relation: 'Relation', *, unit: Optional[Unit] = None):
     def remove_revision(self, revision: int):
         """Remove the given secret revision.
 
-        This is normally called when handling
+        This is normally only called when handling
         :class:`ops.SecretRemoveEvent <ops.charm.SecretRemoveEvent>` or
         :class:`ops.SecretExpiredEvent <ops.charm.SecretExpiredEvent>`.
 
         If the charm does not have permission to remove the secret, or it no
         longer exists, this method will succeed, but the unit will go into error
         state on completion of the current Juju hook.
 
-        If the tracked revision is removed, then :meth:`get_content` should
-        be called immediately afterwards with ``refresh=True``, to avoid
-        leaving the unit in a 'stuck' state.
-
         Args:
-            revision: The secret revision to remove. If being called from a
-                secret event, this should usually be set to
-                :attr:`SecretRemoveEvent.revision`.
+            revision: The secret revision to remove. This should usually be set to
+                :attr:`SecretRemoveEvent.revision` or :attr:`SecretExpiredEvent.revision`.
         """
         if self._id is None:
             self._id = self.get_info().id