drm/amd/display: drop cursor position check in atomic test

get_cursor_position already handles the case where the cursor has
negative off-screen coordinates by not setting
dc_cursor_position.enabled.

Signed-off-by: Simon Ser <contact@emersion.fr>
Fixes: 626bf90 ("drm/amd/display: add basic atomic check for cursor plane")
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -7880,13 +7880,6 @@ static int dm_update_plane_state(struct dc *dc,
 			return -EINVAL;
 		}
 
-		if (new_plane_state->crtc_x <= -new_acrtc->max_cursor_width ||
-			new_plane_state->crtc_y <= -new_acrtc->max_cursor_height) {
-			DRM_DEBUG_ATOMIC("Bad cursor position %d, %d\n",
-							 new_plane_state->crtc_x, new_plane_state->crtc_y);
-			return -EINVAL;
-		}
-
 		return 0;
 	}