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

compiler/testData/diagnostics/tests/declarationChecks/anonymousFunAsLastExpressionInBlock.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_ANONYMOUS_PARAMETER -UNUSED_VARIABLE
 // !CHECK_TYPE
 fun foo(block: () -> (() -> Int)) {}
@@ -39,5 +40,5 @@ fun test() {
 
     x4 checkType { _<Function1<Int, Function0<Int>>>() }
 
-    <!UNUSED_LAMBDA_EXPRESSION!>{ y: Int -> fun(): Int {return 1} }<!>
+    { y: Int -> fun(): Int {return 1} }
 }