[Test] Disable UNUSED_* diagnostics in tests which are not belong to contolFlowAnalysis suite

compiler/testData/diagnostics/tests/smartCasts/objectLiterals/captured.kt

@@ -17,7 +17,7 @@ fun foo(): Int {
         k.run()
         val d: Int = <!DEBUG_INFO_SMARTCAST!>c<!>
         // a is captured so smart cast is not possible
-        return d + <!SMARTCAST_IMPOSSIBLE{NI}, SMARTCAST_IMPOSSIBLE!>a<!>
+        return d + <!SMARTCAST_IMPOSSIBLE, SMARTCAST_IMPOSSIBLE!>a<!>
     }
     else return -1
 }