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

compiler/testData/diagnostics/tests/inner/extensionLambdaInsideNestedClass.kt

@@ -1,21 +1,22 @@
+// FIR_IDENTICAL
 package f
 
 object A {
     class LoginFormPage() : Request({
-        val <!UNUSED_VARIABLE!>failed<!> = session.get("LOGIN_FAILED")
+        val failed = session.get("LOGIN_FAILED")
     })
 }
 
 class B {
     companion object {
         class LoginFormPage() : Request({
-            val <!UNUSED_VARIABLE!>failed<!> = session.get("LOGIN_FAILED")
+            val failed = session.get("LOGIN_FAILED")
         })
     }
 
     class C {
         class LoginFormPage() : Request({
-            val <!UNUSED_VARIABLE!>failed<!> = session.get("LOGIN_FAILED")
+            val failed = session.get("LOGIN_FAILED")
         })
     }
 }
@@ -24,4 +25,4 @@ open class Request(private val handler: ActionContext.() -> Unit) {}
 
 interface ActionContext {
     val session : Map<String, String>
-}
+}