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

runtime/bin/io_service.cc

Index: runtime/bin/io_service.cc
diff --git a/runtime/bin/io_service.cc b/runtime/bin/io_service.cc
index c5e56287f2c753ee9e48ba937a322a2d722403e7..d77e81d35e6a6733797cb42814d033cf347c951f 100644
--- a/runtime/bin/io_service.cc
+++ b/runtime/bin/io_service.cc
@@ -54,12 +54,10 @@ void IOServiceCallback(Dart_Port dest_port_id, Dart_CObject* message) {
   Dart_PostCObject(reply_port_id, result.AsApiCObject());
 }
 
-
 Dart_Port IOService::GetServicePort() {
   return Dart_NewNativePort("IOService", IOServiceCallback, true);
 }
 
-
 void FUNCTION_NAME(IOService_NewServicePort)(Dart_NativeArguments args) {
   Dart_SetReturnValue(args, Dart_Null());
   Dart_Port service_port = IOService::GetServicePort();