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

compiler/testData/diagnostics/testsWithStdLib/kt8050.kt

@@ -1,6 +1,6 @@
 private class X
 
-private operator fun X?.plus(<!UNUSED_PARAMETER!>p<!>: Int) = X()
+private operator fun X?.plus(p: Int) = X()
 
 class C {
     private val map = hashMapOf<String, X>()
@@ -8,4 +8,4 @@ class C {
     fun f() {
         map<!NO_SET_METHOD!>[""]<!> += 1
     }
-}
+}