Switch off FIR version off REDUNDANT_LABEL_WARNING (performance-related)

This reverts commit 363b2550 (partially)

compiler/testData/diagnostics/tests/delegatedProperty/inference/labeledDelegatedExpression.fir.kt

@@ -0,0 +1,11 @@
+import kotlin.reflect.KProperty
+
+class A3 {
+    val a: String by l@ MyProperty()
+
+    class MyProperty<T> {}
+
+    operator fun <T> MyProperty<T>.getValue(thisRef: Any?, desc: KProperty<*>): T {
+        throw Exception("$thisRef $desc")
+    }
+}

compiler/testData/diagnostics/tests/delegatedProperty/inference/labeledDelegatedExpression.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 import kotlin.reflect.KProperty
 
 class A3 {