[libhandy] .gitattibutes: Don't ignore run.in when exporting

[Alexander Mikhaylenko <alexm src gnome org>]

commit dc6ecb8bca5e9002c980955ca9b5b20446476826
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun Jun 7 14:57:54 2020 +0200

    .gitattibutes: Don't ignore run.in when exporting
    
    Without it, the library doesn't build.

 .gitattributes | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/.gitattributes b/.gitattributes
index daf2b036..b59118e9 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -5,7 +5,6 @@ glade/rename-id.patch export-ignore
 glade/sm.puri.Handy.Glade.json export-ignore
 libhandy.syms export-ignore
 lint export-ignore
-run.in export-ignore
 .dir-locals.el export-ignore
 .editorconfig export-ignore
 .gitattributes export-ignore