Remove mistaken changes

Author: markshannon

Tools/cases_generator/abstract_interpreter_generator.py

@@ -154,10 +154,10 @@ def push(self, var: StackItem) -> str:
             self.top_offset.push(var)
             return ""
 
-    def flush(self, out: CWriter, default_cast: str ="(PyObject *)") -> None:
+    def flush(self, out: CWriter) -> None:
         for var in self.variables:
             if not var.peek:
-                cast = default_cast if var.type else ""
+                cast = "(PyObject *)" if var.type else ""
                 if var.name != "unused" and not var.is_array():
                     if var.condition:
                         out.emit(f"if ({var.condition}) ")