VM: Re-format to use at most one newline between functions

runtime/bin/eventhandler_unsupported.cc

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #if defined(DART_IO_DISABLED)
 
 #include "bin/eventhandler.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 #include "include/dart_api.h"
 
 namespace dart {
 namespace bin {
 
 void EventHandler::Start() {}
 
-
 void EventHandler::Stop() {}
 
-
 void FUNCTION_NAME(EventHandler_SendData)(Dart_NativeArguments args) {
   Dart_ThrowException(DartUtils::NewInternalError(
       "EventHandler is not supported on this platform"));
 }
 
-
 void FUNCTION_NAME(EventHandler_TimerMillisecondClock)(
     Dart_NativeArguments args) {
   Dart_ThrowException(DartUtils::NewInternalError(
       "EventHandler is not supported on this platform"));
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(DART_IO_DISABLED)