DOCS/man: remove "Linux desktop issues" section

This section has no reason to exist anymore because:

- No "desktop issues" sections exist for other platforms, and all other
Linux-specific issues are represented as notes for options. This section
only addressed one specific issue.

- This section was shortened significantly with commit
2c46ae8, so there is no need for
this to be a separate section anymore.

- This section was shortened again with commit
d5e681e, when the original rationale
behind this section became outdated because GNOME has implemented the
idle inhibit protocol.

The historical info is moved to the documentation of --stop-screensaver.

DOCS/man/mpv.rst

@@ -1358,27 +1358,6 @@ works like in older mpv releases:
     change, and not apply your additional settings, and/or use a different
     profile name.
 
-Linux desktop issues
-====================
-
-This subsection describes common problems on the Linux desktop. None of these
-problems exist on systems like Windows or macOS.
-
-Disabling Screensaver
----------------------
-
-By default, mpv tries to disable the OS screensaver during playback (only if
-a VO using the OS GUI API is active). ``--stop-screensaver=no`` disables this.
-
-A common problem is that Linux desktop environments ignore the standard
-screensaver APIs on which mpv relies. In particular, mpv uses the Screen Saver
-extension (XSS) on X11, and the idle-inhibit protocol on Wayland.
-
-Before mpv 0.33.0, the X11 backend ran ``xdg-screensaver reset`` in 10 second
-intervals when not paused in order to support screensaver inhibition in these
-environments. This functionality was removed in 0.33.0, but it is possible to
-call the ``xdg-screensaver`` command line program from a user script instead.
-
 
 .. include:: options.rst
 

DOCS/man/options.rst

@@ -3450,10 +3450,12 @@ Window
     the screensaver will re-enable when playback is not active. ``always`` will
     always disable the screensaver. Note that stopping the screensaver is only
     possible if a video output is available (i.e. there is an open mpv window).
+    This is not supported on all video outputs, platforms, or desktop environments.
 
-    This is not supported on all video outputs or platforms. Sometimes it is
-    implemented, but does not work (especially with Linux "desktops"). Read the
-    `Disabling Screensaver`_ section very carefully.
+    Before mpv 0.33.0, the X11 backend ran ``xdg-screensaver reset`` in 10 second
+    intervals when not paused in order to support screensaver inhibition in some
+    environments. This functionality was removed in 0.33.0, but it is possible to
+    call the ``xdg-screensaver`` command line program from a user script instead.
 
 ``--wid=<ID>``
     This tells mpv to attach to an existing window. If a VO is selected that