[gnome-boxes] Revert "Fix build with RDP support disabled"

[Felipe Borges <felipeborges src gnome org>]

commit 41ac0c868f32b583057b980153332cbd103d269f
Author: Felipe Borges <felipeborges gnome org>
Date:   Thu May 17 12:24:26 2018 +0200

    Revert "Fix build with RDP support disabled"
    
    This reverts commit 94ba5bafd7ec03f5cb8ca012a5db3dd952322f40.
    
    The "fix" is as simple as removing the 'rdp-display.vala' from
    the sources list.

 src/meson.build      | 3 +--
 src/rdp-display.vala | 4 ----
 2 files changed, 1 insertion(+), 6 deletions(-)
---
diff --git a/src/meson.build b/src/meson.build
index 4735fe35..a75772e1 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -103,7 +103,6 @@ vala_sources = [
   'libvirt-vm-cloner.vala',
   'libvirt-vm-importer.vala',
   'vnc-display.vala',
-  'rdp-display.vala',
   'wizard-downloads-page.vala',
   'wizard-window.vala',
   'wizard-source.vala',
@@ -155,7 +154,7 @@ if get_option('ovirt')
 endif
 
 if get_option('rdp')
-  vala_sources += 'rdp-display.vala'
+  vala_sources += ['rdp-display.vala']
 
   pkgdatadir = join_paths (data_dir, meson.project_name ())
   gtk_frdp = subproject(
diff --git a/src/rdp-display.vala b/src/rdp-display.vala
index d0d88435..b161189a 100644
--- a/src/rdp-display.vala
+++ b/src/rdp-display.vala
@@ -1,8 +1,6 @@
 // This file is part of GNOME Boxes. License: LGPLv2+
 using Gtk;
 
-#if HAVE_RDP
-
 private class Boxes.FrdpDisplay: Frdp.Display {
     public override bool authenticate (out string username, out string password, out string domain) {
         username = this.username;
@@ -107,5 +105,3 @@ public override void disconnect_it () {
     public override void send_keys (uint[] keyvals) {
     }
 }
-
-#endif