slimbus: qcom: remove unused qcom controller driver

slimbus: qcom: remove unused qcom controller driver

Qcom Slimbus controller driver is totally unused and dead code, there is
no point in keeping this driver in the kernel without users.

This patch removes the driver along with device tree bindings.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://lore.kernel.org/r/20250912131202.303026-2-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>