Fix tests

Author: odersky

tests/neg/i11064.scala renamed to tests/neg-custom-args/allow-deep-subtypes/i11064.scala

@@ -1,11 +1,11 @@
-object O1 {  // error: cannot be instantiated
+object O1 {
   type A[X] = X
   opaque type T = A // error: opaque type alias must be fully applied
 }
 
 object O2 {
   opaque type A[X] = X
-  object A { // error: cannot be instantiated
+  object A {
     opaque type T = A  // error: opaque type alias must be fully applied
   }
 }