bpo-43137: webbrowser: Don't run gvfs-open on GNOME

gvfs-open was deprecated in 2015 and removed in 2018. The replacement
is gio(1) (as used in a previous commit).

GNOME_DESKTOP_SESSION_ID was deprecated in 2008 and removed in 2018.
The replacement is XDG_CURRENT_DESKTOP (as mentioned in a previous
commit).

Signed-off-by: Simon McVittie <[email protected]>

Author: smcv

Lib/webbrowser.py

@@ -467,10 +467,6 @@ def register_X_browsers():
     if shutil.which("gio"):
         register("gio", None, BackgroundBrowser(["gio", "open", "--", "%s"]))
 
-    # Equivalent of gio open before 2015
-    if "GNOME_DESKTOP_SESSION_ID" in os.environ and shutil.which("gvfs-open"):
-        register("gvfs-open", None, BackgroundBrowser("gvfs-open"))
-
     # The default KDE browser
     if "KDE_FULL_SESSION" in os.environ and shutil.which("kfmclient"):
         register("kfmclient", Konqueror, Konqueror("kfmclient"))