Remove OI/NI attributes from test data

compiler/testData/diagnostics/tests/scopes/protectedVisibility/syntheticSAMExtensions.kt

@@ -20,7 +20,7 @@ class B : A() {
         }
 
         if (d.x is B) {
-            <!SMARTCAST_IMPOSSIBLE{OI}!>d.x<!>.<!INVISIBLE_MEMBER{NI}!>foo<!> {}
+            d.x.<!INVISIBLE_MEMBER!>foo<!> {}
         }
     }
 }

compiler/testData/diagnostics/tests/scopes/protectedVisibility/unstableSmartCast.kt

@@ -12,7 +12,7 @@ class Derived : BaseOuter() {
     fun test(foo: Foo) {
         if (foo.base is Derived) {
             foo.base.foo() checkType { _<String>() } // Resolved to extension
-            <!SMARTCAST_IMPOSSIBLE{OI}!>foo.base<!>.<!INVISIBLE_MEMBER{NI}!>bar<!>()
+            foo.base.<!INVISIBLE_MEMBER!>bar<!>()
         }
     }
 }