clk: imx: composite-8m: Delete two unnecessary initialisations in __imx8m_clk_hw_composite()

Two local variables will eventually be set to appropriate pointers
a bit later. Thus omit the explicit initialisation at the beginning.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/6604590e-d0f7-4798-a1b9-b2f474f3a642@web.de


Signed-off-by: Abel Vesa <abel.vesa@linaro.org>