Removing unreachable specialization in PRaiseNode.

Author: teshull

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/PRaiseNode.java

@@ -198,14 +198,6 @@ static PException doPythonBuiltinClass(Node raisingNode, PythonBuiltinClass exce
         throw raiseExceptionObject(raisingNode, factory.createBaseException(exceptionType), language);
     }
 
-    @Specialization(guards = {"isNoValue(cause)"})
-    static PException doBuiltinClass(Node raisingNode, PythonBuiltinClass exceptionType, @SuppressWarnings("unused") PNone cause, String format, Object[] arguments,
-                    @Shared("factory") @Cached PythonObjectFactory factory,
-                    @Shared("language") @CachedLanguage PythonLanguage language) {
-        assert format != null;
-        throw doBuiltinType(raisingNode, exceptionType.getType(), cause, format, arguments, factory, language);
-    }
-
     @Specialization(guards = {"isNoValue(cause)", "isNoValue(format)", "arguments.length == 0"})
     static PException doPythonManagedClass(Node raisingNode, PythonManagedClass exceptionType, @SuppressWarnings("unused") PNone cause, @SuppressWarnings("unused") PNone format,
                     @SuppressWarnings("unused") Object[] arguments,