[gnome-builder] libide/editor: fix license for language spec

[Christian Hergert <chergert src gnome org>]

commit 345ab68407f932650cc9fd92ef2916fb993f50ac
Author: Christian Hergert <chergert redhat com>
Date:   Wed Oct 5 17:20:31 2022 -0700

    libide/editor: fix license for language spec
    
    This was just c&p of the license, which we don't need. It should follow
    the rest of Builder.

 src/libide/editor/plain.lang | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)
---
diff --git a/src/libide/editor/plain.lang b/src/libide/editor/plain.lang
index 27fe6348c..fc205b5dc 100644
--- a/src/libide/editor/plain.lang
+++ b/src/libide/editor/plain.lang
@@ -1,24 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
- This file is part of GtkSourceView
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
 
- Authors: Marco Barisione, Emanuele Aina
- Copyright (C) 2005-2007 Marco Barisione <barisione gmail com>
- Copyright (C) 2005-2007 Emanuele Aina
-
- GtkSourceView is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- GtkSourceView is distributed in the hope that it will be useful,
+ This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- Lesser General Public License for more details.
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
- You should have received a copy of the GNU Lesser General Public License
- along with this library; if not, see <http://www.gnu.org/licenses/>.
+ SPDX-License-Identifier: GPL-3.0-or-later
 
 -->
 <language id="plain" name="Plain Text" version="2.0" _section="Other">