Report a compile-time error when a setter has not exactly one formal parameter.

tests/co19/co19-dart2js.status

Index: tests/co19/co19-dart2js.status
diff --git a/tests/co19/co19-dart2js.status b/tests/co19/co19-dart2js.status
index ce9f7b04482bdf872040f0374f5c3446841ee131..f47f6d9fa8ee3765c6d3bb280184bdc5d54c52fb 100644
--- a/tests/co19/co19-dart2js.status
+++ b/tests/co19/co19-dart2js.status
@@ -535,14 +535,6 @@ Language/07_Classes/2_Getters_A01_t04: Fail # Checks that a compile-time error i
 Language/07_Classes/2_Getters_A01_t05: Fail # Checks that a compile-time error is produced if an static getter has empty formal parameter list.
 Language/07_Classes/2_Getters_A01_t06: Fail # Checks that a compile-time error is produced if an arbitrary static getter specifies a single formal parameter.
 Language/07_Classes/2_Getters_A01_t07: Fail # Checks that a compile-time error is produced if an arbitrary instance getter specifies a single formal parameter.
-Language/07_Classes/3_Setters_A03_t01: Fail # Checks that a compile-time error is produced if a setter's formal parameter list contains two required parameters.
-Language/07_Classes/3_Setters_A03_t02: Fail # Checks that a compile-time error is produced if a setter's formal parameter list consists of a single optional parameter.
-Language/07_Classes/3_Setters_A03_t03: Fail # Checks that a compile-time error is produced if a setter's formal parameter list is empty.
-Language/07_Classes/3_Setters_A03_t04: Fail # Checks that a compile-time error is produced if a setter's formal parameter list contains a single optional parameter with a default value.
-Language/07_Classes/3_Setters_A03_t05: Fail # Checks that a compile-time error is produced if a static setter's formal parameter list contains two required parameters.
-Language/07_Classes/3_Setters_A03_t06: Fail # Checks that a compile-time error is produced if a static setter's formal parameter list consists of a single optional parameter.
-Language/07_Classes/3_Setters_A03_t07: Fail # Checks that a compile-time error is produced if a static setter's formal parameter list is empty.
-Language/07_Classes/3_Setters_A03_t08: Fail # Checks that a compile-time error is produced if a static setter's formal parameter list contains a single optional parameter with a default value.
 Language/07_Classes/4_Abstract_Instance_Members_A04_t01: Fail # Checks that a compile-time error is produced when the overriding abstract method has fewer named parameters than the instance method being overridden (2 vs 3) and neither  have any required parameters.
 Language/07_Classes/4_Abstract_Instance_Members_A04_t05: Fail # Checks that a compile-time error is produced when the overriding non-abstract  instance method has the same set of named parameters as the abstract method being overriden,  but in a different order.
 Language/07_Classes/4_Abstract_Instance_Members_A04_t06: Fail # Checks that a compile-time error is produced when the overriding non-abstract  instance method has almost the same set of named parameters as the abstract method being overriden,  except for one that has a different name.