Get rid of obsolete syntax in quickfixes changing lambda's signature

- Do not wrap parameters with '()'
- Do not set return type for them
- Fix existing testData

idea/testData/quickfix/changeSignature/changeFunctionLiteralParameters1.kt

@@ -2,5 +2,5 @@
 // DISABLE-ERRORS
 
 fun f(x: Int, y: Int, z : () -> Int) {
-    f(1, 2, {(x: Int, y: Int<caret>) -> x});
+    f(1, 2, {x: Int, y: Int<caret> -> x});
 }

idea/testData/quickfix/changeSignature/changeFunctionLiteralParameters2.kt

@@ -2,5 +2,5 @@
 // DISABLE-ERRORS
 
 fun f(x: Int, y: Int, z : (Int, Int?, Any) -> Int) {
-    f(1, 2, {(<caret>x: Int) -> x});
+    f(1, 2, {<caret>x: Int -> x});
 }

idea/testData/quickfix/changeSignature/changeFunctionLiteralParameters2.kt.after

@@ -2,5 +2,5 @@
 // DISABLE-ERRORS
 
 fun f(x: Int, y: Int, z : (Int, Int?, Any) -> Int) {
-    f(1, 2, {(i: Int, i1: Int?, any: Any) -> x});
+    f(1, 2, { i: Int, i1: Int?, any: Any -> x});
 }

idea/testData/quickfix/changeSignature/fixExtensionLambdaSignature.kt

@@ -5,5 +5,5 @@ fun foo(f: Int.(Int, Int) -> Int) {
 }
 
 fun test() {
-    foo { <caret>(a: Int) -> 0 }
+    foo { <caret>a: Int -> 0 }
 }

idea/testData/quickfix/changeSignature/fixExtensionLambdaSignature.kt.after

@@ -5,5 +5,5 @@ fun foo(f: Int.(Int, Int) -> Int) {
 }
 
 fun test() {
-    foo {(i: Int, i1: Int) -> 0 }
+    foo { i: Int, i1: Int -> 0 }
 }

idea/testData/quickfix/changeSignature/matchFunctionLiteralWithSAMType.after.kt

@@ -2,5 +2,5 @@
 // DISABLE-ERRORS
 
 fun main(args: Array<String>) {
-    Test<String>().perform("") {(s: String?, s1: String?) -> }
+    Test<String>().perform("") { s: String?, s1: String? -> }
 }