Revert "Add support for pow operator."

This reverts commit d849fb23.

Cython/Compiler/ModuleNode.py

@@ -1906,13 +1906,6 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
         if scope.directives['c_api_binop_methods']:
             code.putln('#define %s %s' % (func_name, slot.left_slot.slot_code(scope)))
         else:
-            if slot.left_slot.signature == TypeSlots.binaryfunc:
-                extra_arg = extra_arg_decl = ''
-            elif slot.left_slot.signature == TypeSlots.ternaryfunc:
-                extra_arg = ', extra_arg'
-                extra_arg_decl = ', PyObject* extra_arg'
-            else:
-                error(entry.pos, "Unexpected type lost signature: %s" % slot)
             def has_slot_method(method_name):
                 entry = scope.lookup(method_name)
                 return bool(entry and entry.is_special and entry.func_cname)
@@ -1923,7 +1916,7 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
                 else:
                     operands = "left, right"
                 if entry and entry.is_special and entry.func_cname:
-                    return "%s(%s%s)" % (entry.func_cname, operands, extra_arg)
+                    return "%s(%s)" % (entry.func_cname, operands)
                 else:
                     py_ident = code.intern_identifier(EncodedString(method_name))
                     return "%s_maybe_call_super(%s, %s)" % (func_name, operands, py_ident)
@@ -1937,8 +1930,6 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
                         "call_left": call_slot_method(slot.left_slot.method_name, reverse=False),
                         "call_right": call_slot_method(slot.right_slot.method_name, reverse=True),
                         "type_cname": '((PyTypeObject*) %s)' % scope.namespace_cname,
-                        "extra_arg": extra_arg,
-                        "extra_arg_decl": extra_arg_decl,
                         }).impl.strip())
             code.putln()
         if preprocessor_guard:

Cython/Utility/ExtensionTypes.c

@@ -281,7 +281,7 @@ __PYX_GOOD:
 
 /////////////// BinopSlot ///////////////
 
-static CYTHON_INLINE PyObject *{{func_name}}_maybe_call_super(PyObject *self, PyObject *other, PyObject* name {{extra_arg_decl}}) {
+static CYTHON_INLINE PyObject *{{func_name}}_maybe_call_super(PyObject *self, PyObject *other, PyObject* name) {
     PyObject *res;
     PyObject *method;
     if (!Py_TYPE(self)->tp_base) {
@@ -293,11 +293,7 @@ static CYTHON_INLINE PyObject *{{func_name}}_maybe_call_super(PyObject *self, Py
         PyErr_Clear();
         return Py_INCREF(Py_NotImplemented), Py_NotImplemented;
     }
-    #if {{int(not extra_arg)}}
     res = __Pyx_PyObject_Call2Args(method, self, other);
-    #else
-    res = PyObject_CallFunctionObjArgs(method, self, other {{extra_arg}}, NULL);
-    #endif
     Py_DECREF(method);
     if (!res) {
         return Py_INCREF(Py_NotImplemented), Py_NotImplemented;
@@ -305,7 +301,7 @@ static CYTHON_INLINE PyObject *{{func_name}}_maybe_call_super(PyObject *self, Py
     return res;
 }
 
-static PyObject *{{func_name}}(PyObject *left, PyObject *right {{extra_arg_decl}}) {
+static PyObject *{{func_name}}(PyObject *left, PyObject *right) {
     PyObject *res;
     int maybe_self_is_left, maybe_self_is_right = 0;
     maybe_self_is_left = Py_TYPE(left) == Py_TYPE(right)