Ubuntu/Debian: Remove unnecessary override of apache::mod_libs

Setting the mod_libs parameter is not required if the library is named
"mod_${name}.so".

Change-Id: I299dab344af72f5bec82a6a50a54a34dc4185344

manifests/apache.pp

@@ -8,9 +8,6 @@ class openstack_integration::apache {
     class { 'apache':
       mod_packages => merge($::apache::params::mod_packages, {
         'wsgi' => 'libapache2-mod-wsgi-py3',
-      }),
-      mod_libs     => merge($::apache::params::mod_libs, {
-        'wsgi' => 'mod_wsgi.so',
       })
     }
   }