docs: simplify skipTaskbar breaking changes text (electron#33479)

docs/breaking-changes.md

@@ -29,19 +29,15 @@ renderers.
 
 ### Removed: `skipTaskbar` on Linux
 
-See `skipTaskbar` discussion in 19.0 below. This feature is not available on
-Wayland. Since most modern Linux desktops are transitioning to Wayland, this
-feature will be removed for Linux.
-
-## Planned Breaking API Changes (19.0)
-
-### Unsupported: `skipTaskbar` on Linux
-
 On X11, `skipTaskbar` sends a `_NET_WM_STATE_SKIP_TASKBAR` message to the X11
 window manager. There is not a direct equivalent for Wayland, and the known
 workarounds have unacceptable tradeoffs (e.g. Window.is_skip_taskbar in GNOME
 requires unsafe mode), so Electron is unable to support this feature on Linux.
 
+## Planned Breaking API Changes (19.0)
+
+None
+
 ## Planned Breaking API Changes (18.0)
 
 ### Removed: `nativeWindowOpen`