Migrate testdata to new lambda syntax

idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_notFunctionLiteralParameter.kt

@@ -1,6 +1,6 @@
 // IS_APPLICABLE: false
 
-val foo = { (x: Int) ->
+val foo = { x: Int ->
     class Inner() {
       fun temp(<caret>y: Int) : Int { return x + y }
     }

idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_parameterHasExplicitType.kt

@@ -1,2 +1,2 @@
 // IS_APPLICABLE: false
-val incr = { (<caret>x: Int) -> x + 1}
+val incr = { <caret>x: Int -> x + 1}