drm: Fix TODO list mentioning non-KMS drivers

Non-KMS drivers have been removed from DRM. Update the TODO list
accordingly.

Signed-off-by: Thomas Zimmermann <[e-mail]>
Fixes: a276afc19eec ("drm: Remove some obsolete drm pciids(tdfx, mga, i810, savage, r128, sis, via)")
Cc: Cai Huoqing <[e-mail]>
Cc: Daniel Vetter <[e-mail]>
Cc: Dave Airlie <[e-mail]>
Cc: Thomas Zimmermann <[e-mail]>
Cc: Maarten Lankhorst <[e-mail]>
Cc: Maxime Ripard <[e-mail]>
Cc: David Airlie <[e-mail]>
Cc: Daniel Vetter <[e-mail]>
Cc: Jonathan Corbet <[e-mail]>
Cc: [e-mail]
Cc: <[e-mail]> # v6.3+
Cc: [e-mail]
Reviewed-by: David Airlie <[e-mail]>
Reviewed-by: Daniel Vetter <[e-mail]>
Acked-by: Alex Deucher <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

Documentation/gpu/todo.rst

···
 
 Level: Intermediate
 
-Remove load/unload callbacks from all non-DRIVER_LEGACY drivers
----------------------------------------------------------------
+Remove load/unload callbacks
+----------------------------
 
 The load/unload callbacks in struct &drm_driver are very much midlayers, plus
 for historical reasons they get the ordering wrong (and we can't fix that)
···
 - Rework drivers to no longer use the load/unload callbacks, directly coding the
   load/unload sequence into the driver's probe function.
 
-- Once all non-DRIVER_LEGACY drivers are converted, disallow the load/unload
-  callbacks for all modern drivers.
+- Once all drivers are converted, remove the load/unload callbacks.
 
 Contact: Daniel Vetter