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

compiler/testData/diagnostics/tests/regressions/kt459.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // KT-459 Type argument inference fails when class names are fully qualified
 
 fun test() {
@@ -5,4 +6,4 @@ fun test() {
   attributes["href"] = "1" // inference fails, but it shouldn't
 }
 
-operator fun <K, V> Map<K, V>.set(<!UNUSED_PARAMETER!>key<!> : K, <!UNUSED_PARAMETER!>value<!> : V) {}//= this.put(key, value)
+operator fun <K, V> Map<K, V>.set(key : K, value : V) {}//= this.put(key, value)