Update tests

Author: ahejlsberg

tests/cases/compiler/typeParameterWithInvalidConstraintType.ts

@@ -1,7 +1,6 @@
 class A<T extends T> {
     foo() {
         var x: T;
-        // no error expected below this line
         var a = x.foo();
         var b = new x(123);
         var c = x[1];

tests/cases/conformance/types/keyof/circularIndexedAccessErrors.ts

@@ -13,7 +13,7 @@ declare let x2: T2<"x">;
 let x2x = x2.x;
 
 interface T3<T extends T3<T>> {
-    x: T["x"];  // Error
+    x: T["x"];
 }
 
 interface T4<T extends T4<T>> {
@@ -25,7 +25,7 @@ class C1 {
 }
 
 class C2 {
-    x: this["y"];  // Error
-    y: this["z"];  // Error
-    z: this["x"];  // Error
+    x: this["y"];
+    y: this["z"];
+    z: this["x"];
 }