[gdm] Revert "session: set session type to "x11" or "wayland" as appropriate"

[Ray Strode <halfline src gnome org>]

commit 72ed6413b2b88d438593b98f5e81f5c4fea56c49
Author: Ray Strode <rstrode redhat com>
Date:   Thu Dec 18 13:23:13 2014 -0500

    Revert "session: set session type to "x11" or "wayland" as appropriate"
    
    This reverts commit 2a3e3e02296b9ff20bc1bffcca4ed7ccf210a4fb.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741658

 daemon/gdm-session.c |   12 ------------
 1 files changed, 0 insertions(+), 12 deletions(-)
---
diff --git a/daemon/gdm-session.c b/daemon/gdm-session.c
index fceac24..319b363 100644
--- a/daemon/gdm-session.c
+++ b/daemon/gdm-session.c
@@ -162,7 +162,6 @@ enum {
         LAST_SIGNAL
 };
 
-static gboolean gdm_session_is_wayland_session (GdmSession *self);
 static guint signals [LAST_SIGNAL] = { 0, };
 
 G_DEFINE_TYPE (GdmSession,
@@ -2396,7 +2395,6 @@ static void
 set_up_session_environment (GdmSession *self)
 {
         GdmSessionDisplayMode display_mode;
-        const char *session_type = "x11";
         gchar *desktop_names;
         const char *locale;
 
@@ -2441,16 +2439,6 @@ set_up_session_environment (GdmSession *self)
                 }
         }
 
-#ifdef ENABLE_WAYLAND_SUPPORT
-        if (gdm_session_is_wayland_session (self)) {
-                session_type = "wayland";
-        }
-#endif
-
-        gdm_session_set_environment_variable (self,
-                                              "XDG_SESSION_TYPE",
-                                              session_type);
-
         if (g_getenv ("WINDOWPATH") != NULL) {
                 gdm_session_set_environment_variable (self,
                                                       "WINDOWPATH",