Fixed test data for new lambda syntax

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/kt5200DeadCodeInLambdas.kt

@@ -2,7 +2,6 @@
 
 fun test1(): String {
     doCall @local {
-        () : String ->
         throw NullPointerException()
         <!UNREACHABLE_CODE!>"b3"<!> //unmarked
     }
@@ -12,7 +11,6 @@ fun test1(): String {
 
 fun test2(nonLocal: String, b: Boolean): String {
     doCall @local {
-        () : String ->
         if (b) {
             return@local "b1"
         } else {

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt1977.kt

@@ -30,7 +30,7 @@ fun test2(s : String) : Int? {
         22
     } finally {
             <!UNUSED_FUNCTION_LITERAL!>{
-            (x : Int) -> x
+            x : Int -> x
             }<!>
     }
 }

compiler/testData/diagnostics/tests/controlFlowAnalysis/referenceToPropertyInitializer.kt

@@ -2,7 +2,7 @@
 package o
 
 class TestFunctionLiteral {
-    val sum: (Int) -> Int = { (x: Int) ->
+    val sum: (Int) -> Int = { x: Int ->
         sum(x - 1) + x
     }
     val foo: () -> Unit = @l ({ foo() })