The init sequence specifies the 0x11 and 0x29 dsi commands, which are
the exit-sleep and display-on commands.

In the actual prepare step the driver already uses the appropriate
function calls for those, so drop the duplicates.

Fixes: e5f9d543 ("drm/panel: ltk050h3146w: add support for Leadtek LTK050H3148W-CTA6 variant")
Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Reviewed-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240320131232.327196-2-heiko@sntech.de