diff -r acad42456767 -r 7769d0f61810 server/session.py
--- a/server/session.py	Tue Jul 22 15:42:47 2014 +0200
+++ b/server/session.py	Fri May 02 17:41:11 2014 +0200
@@ -1010,15 +1010,12 @@
 
     @_with_cnx_set
     @_open_only
-    def execute(self, rql, kwargs=None, eid_key=None, build_descr=True):
+    def execute(self, rql, kwargs=None, build_descr=True):
         """db-api like method directly linked to the querier execute method.
 
         See :meth:`cubicweb.dbapi.Cursor.execute` documentation.
         """
         self._session_timestamp.touch()
-        if eid_key is not None:
-            warn('[3.8] eid_key is deprecated, you can safely remove this argument',
-                 DeprecationWarning, stacklevel=2)
         rset = self._execute(self, rql, kwargs, build_descr)
         rset.req = self
         self._session_timestamp.touch()