[gtk-doc: 1/2] meson, manual: don't try to configure non existent file

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 03e07f1fa202c82ef8f4eb7df4d072d5eb186eec
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Wed Sep 12 20:34:22 2018 +0200

    meson, manual: don't try to configure non existent file
    
    version.ent.in was added on commit a3e37a3 and configured for meson
    in commit 5999ccf, but this commit wasn't reverted on commit c8d7d4f
    breaking meson builds

 help/manual/meson.build | 7 -------
 1 file changed, 7 deletions(-)
---
diff --git a/help/manual/meson.build b/help/manual/meson.build
index 73b72ff..6f8ec2c 100644
--- a/help/manual/meson.build
+++ b/help/manual/meson.build
@@ -7,10 +7,3 @@ gnome.yelp(
   package_name,
   sources: gtkdoc_help_sources,
 )
-
-conf_data = configuration_data()
-conf_data.set('VERSION', version)
-
-configure_file(input : 'version.ent.in',
-               output : 'version.ent',
-               configuration : conf_data)