Switch off FIR version off REDUNDANT_LABEL_WARNING (performance-related)

This reverts commit 363b2550 (partially)

compiler/testData/diagnostics/tests/controlStructures/continueAndBreakLabelWithSameFunctionName.fir.kt

@@ -50,4 +50,4 @@ class Test7 {
             <!NOT_A_LOOP_LABEL!>break@Test8<!>
         }
     }
-}
+}

compiler/testData/diagnostics/tests/controlStructures/notAFunctionLabel_after.fir.kt

@@ -51,12 +51,12 @@ fun testLoopLabelInReturn(xs: List<Int>) {
 }
 
 fun testValLabelInReturn() {
-    <!REDUNDANT_LABEL_WARNING!>L@<!> val fn = { <!NOT_A_FUNCTION_LABEL!>return@L<!> }
+    L@ val fn = { <!NOT_A_FUNCTION_LABEL!>return@L<!> }
     fn()
 }
 
 fun testHighOrderFunctionCallLabelInReturn() {
-    <!REDUNDANT_LABEL_WARNING!>L@<!> run {
+    L@ run {
         <!NOT_A_FUNCTION_LABEL!>return@L<!>
     }
 }

compiler/testData/diagnostics/tests/controlStructures/notAFunctionLabel_before.fir.kt

@@ -51,12 +51,12 @@ fun testLoopLabelInReturn(xs: List<Int>) {
 }
 
 fun testValLabelInReturn() {
-    <!REDUNDANT_LABEL_WARNING!>L@<!> val fn = { <!NOT_A_FUNCTION_LABEL!>return@L<!> }
+    L@ val fn = { <!NOT_A_FUNCTION_LABEL!>return@L<!> }
     fn()
 }
 
 fun testHighOrderFunctionCallLabelInReturn() {
-    <!REDUNDANT_LABEL_WARNING!>L@<!> run {
+    L@ run {
         <!NOT_A_FUNCTION_LABEL!>return@L<!>
     }
 }

compiler/testData/diagnostics/tests/controlStructures/redundantLabel.fir.kt

@@ -0,0 +1,39 @@
+@Target(AnnotationTarget.EXPRESSION)
+@Retention(AnnotationRetention.SOURCE)
+annotation class Ann
+
+fun testLambdaLabel() = l@ { 42 }
+
+fun testAnonymousFunctionLabel() = l@ fun() {}
+
+fun testAnnotatedLambdaLabel() = lambda@ @Ann {}
+
+fun testParenthesizedLambdaLabel() = lambda@ ( {} )
+
+fun testLabelBoundToInvokeOperatorExpression() = l@ { 42 }()
+
+fun testLabelBoundToLambda() = (l@ { 42 })()
+
+fun testWhileLoopLabel() {
+    L@ while (true) {}
+}
+
+fun testDoWhileLoopLabel() {
+    L@ do {} while (true)
+}
+
+fun testForLoopLabel(xs: List<Any>) {
+    L@ for (x in xs) {}
+}
+
+fun testValLabel() {
+    L@ val fn = {}
+    fn()
+}
+
+fun testHighOrderFunctionCallLabel() {
+    L@ run {}
+}
+
+fun testAnonymousObjectLabel() =
+    L@ object {}

compiler/testData/diagnostics/tests/controlStructures/redundantLabel.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 @Target(AnnotationTarget.EXPRESSION)
 @Retention(AnnotationRetention.SOURCE)
 annotation class Ann