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

compiler/testData/diagnostics/tests/varargs/varargsAndFunctionLiterals.kt

@@ -1,4 +1,5 @@
-fun f(vararg <!UNUSED_PARAMETER!>t<!> : Int, <!UNUSED_PARAMETER!>f<!> : ()->Unit) {
+// FIR_IDENTICAL
+fun f(vararg t : Int, f : ()->Unit) {
 }
 
 fun test() {
@@ -10,4 +11,4 @@ fun test() {
     f(1, 2) {
 
     }
-}
+}