[glibmm] convert_gio.m4: Remove duplicate conversion.

[Murray Cumming <murrayc src gnome org>]

commit d1ff159572f0cd336316b00e5fb9b5dd087a9acc
Author: Murray Cumming <murrayc murrayc com>
Date:   Tue Apr 18 12:27:20 2017 +0200

    convert_gio.m4: Remove duplicate conversion.

 tools/m4/convert_gio.m4 |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/tools/m4/convert_gio.m4 b/tools/m4/convert_gio.m4
index 0724a8a..1304c1b 100644
--- a/tools/m4/convert_gio.m4
+++ b/tools/m4/convert_gio.m4
@@ -44,7 +44,6 @@ _CONV_GIO_DBUS_ENUM(ProxyFlags)
 _CONV_GIO_DBUS_ENUM(SendMessageFlags)
 _CONV_GIO_DBUS_ENUM(ServerFlags)
 _CONV_GIO_ENUM(DriveStartFlags)
-_CONV_GIO_ENUM(DriveStartFlags)
 _CONV_GIO_ENUM(DriveStartStopType)
 _CONV_GIO_INCLASS_ENUM(Emblem,Origin)
 _CONV_GIO_INCLASS_ENUM(FileAttributeInfo,Flags)