Remove invalid 'StopIterationTargetNode'.

Author: fangerer

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/parser/PythonBaseTreeTranslator.java

@@ -71,7 +71,6 @@
 import com.oracle.graal.python.nodes.control.GetIteratorNode;
 import com.oracle.graal.python.nodes.control.LoopNode;
 import com.oracle.graal.python.nodes.control.ReturnTargetNode;
-import com.oracle.graal.python.nodes.control.StopIterationTargetNode;
 import com.oracle.graal.python.nodes.expression.AndNode;
 import com.oracle.graal.python.nodes.expression.CastToBooleanNode;
 import com.oracle.graal.python.nodes.expression.OrNode;
@@ -1282,16 +1281,6 @@ public Object visitTry_stmt(Python3Parser.Try_stmtContext ctx) {
             assert false;
         }
 
-        /**
-         * Specialize except StopIteration to StopIterationTargetNode.
-         */
-        if (exceptClauses.size() == 1 && EmptyNode.isEmpty(elseNode) && EmptyNode.isEmpty(finallyNode) && ctx.except_clause(0).test() != null) {
-            if (ctx.except_clause(0).test().getText().equals("StopIteration")) {
-                PNode exceptBody = (PNode) ctx.except_clause(0).accept(this);
-                return new StopIterationTargetNode(tryNode, exceptBody);
-            }
-        }
-
         return factory.createTryExceptElseFinallyNode(tryNode, exceptClauses.toArray(new ExceptNode[0]), elseNode, finallyNode);
     }