[gnome-games] flatpak: Correct gambatte license

[Alexander Mikhaylenko <alexm src gnome org>]

commit 605e8a74ce3ca91844d473d99a309fe721284205
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Fri Jan 18 09:12:47 2019 -0500

    flatpak: Correct gambatte license
    
    The Gambatte license is GPL-2 only, there is no "or later" clause
    https://github.com/libretro/gambatte-libretro

 flatpak/libretro-cores/gambatte.libretro | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/flatpak/libretro-cores/gambatte.libretro b/flatpak/libretro-cores/gambatte.libretro
index 64b2c8e3..6cefff97 100644
--- a/flatpak/libretro-cores/gambatte.libretro
+++ b/flatpak/libretro-cores/gambatte.libretro
@@ -5,7 +5,7 @@ Name=Gambatte
 Module=gambatte_libretro.so
 LibretroVersion=1
 Authors=Sinamas;
-License=GPL-2.0+;
+License=GPL-2.0;
 
 [Platform:GameBoy]
 MimeType=application/x-gameboy-rom;