[msitools] build-sys: fix double msi-1.0.vapi inclusion

[Marc-André Lureau <malureau src gnome org>]

commit ac67a3f9ca5122740529cf168fec559376c0ffe1
Author: Marc-André Lureau <marcandre lureau redhat com>
Date:   Sun Apr 12 01:35:06 2020 +0200

    build-sys: fix double msi-1.0.vapi inclusion
    
    Fixes:
    warning: Ignoring source file
    `/home/elmarco/src/msitools/build/libmsi/libmsi-1.0.vapi', which was
    already added to this context
    
    Fixes:
    https://gitlab.gnome.org/GNOME/msitools/-/issues/16
    
    Signed-off-by: Marc-André Lureau <marcandre lureau redhat com>

 tools/meson.build | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/tools/meson.build b/tools/meson.build
index 3ad342f..c75086a 100644
--- a/tools/meson.build
+++ b/tools/meson.build
@@ -40,7 +40,6 @@ if get_option('introspection')
       '--enable-experimental',
       '--pkg', 'gio-unix-2.0',
       '--pkg', 'libgcab-1.0',
-      '--pkg', 'libmsi-1.0',
       '--pkg', 'posix',
       '--pkg', 'config',
       '--vapidir=@0@'.format(meson.source_root()),