Format all tests.

tests/standalone/io/network_interface_test.dart

Index: tests/standalone/io/network_interface_test.dart
diff --git a/tests/standalone/io/network_interface_test.dart b/tests/standalone/io/network_interface_test.dart
index 71f8312b464bad28d0722944f833be5583feacd8..bfdd20eecff590c578b0c161ac22a5e9e748de35 100644
--- a/tests/standalone/io/network_interface_test.dart
+++ b/tests/standalone/io/network_interface_test.dart
@@ -6,7 +6,6 @@ import 'dart:io';
 
 import "package:expect/expect.dart";
 
-
 void testListLoopback() {
   NetworkInterface.list(includeLoopback: false).then((list) {
     for (var i in list) {
@@ -21,7 +20,6 @@ void testListLoopback() {
   });
 }
 
-
 void testListLinkLocal() {
   NetworkInterface.list(includeLinkLocal: false).then((list) {
     for (var i in list) {
@@ -32,7 +30,6 @@ void testListLinkLocal() {
   });
 }
 
-
 void testListIndex() {
   var set = new Set();
   NetworkInterface.list(includeLoopback: true).then((list) {
@@ -45,7 +42,6 @@ void testListIndex() {
   });
 }
 
-
 void main() {
   if (!NetworkInterface.listSupported) {
     return;