[gtk/gst.gl.win32: 40/44] gstglsink.c: Some cleanups

[Chun-wei Fan <fanchunwei src gnome org>]

commit 872708891c99d196323571e95228f3defdad43cb
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Thu May 20 12:21:54 2021 +0800

    gstglsink.c: Some cleanups
    
    Remove some leftovers, and update the comment block as needed

 modules/media/gtkgstsink.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/modules/media/gtkgstsink.c b/modules/media/gtkgstsink.c
index c6f7d61ea2..7452ee7a4b 100644
--- a/modules/media/gtkgstsink.c
+++ b/modules/media/gtkgstsink.c
@@ -482,15 +482,13 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
 
       if (gl_handle)
         {
-          gchar *gl_api_str = NULL;
-          gpointer display_ptr = NULL;
-
           /*
            * We must force a win32 GstGL display type and if using desktop GL, the GL_Platform to be WGL
            * and an appropriate GstGL API depending on the gl_api we receive.  We also ensure that we use
-           * an EGL GstGL API if we are using EGL in GDK.  Envvars are required, unfortunately, so that
-           * gst_gl_display_new() does things correctly if we have GstGL built with both EGL and WGL
-           * support, otherwise gst_gl_display_new() will assume an EGL display, which won't work for us
+           * an EGL GstGL API if we are using EGL in GDK.  Envvars are required, unless
+           * gst_gl_display_new_with_type() is available, unfortunately, so that gst_gl_display_new() does
+           * things correctly if we have GstGL built with both EGL and WGL support for the WGL case,
+           * otherwise gst_gl_display_new() will assume an EGL display, which won't work for us
            */
 
           if (gl_api == GST_GL_API_OPENGL3 || gl_api == GST_GL_API_OPENGL)