slimbus: qcom-ngd-ctrl: remove redundant out of memory messages

Failure of dma_alloc_coherent will already throw a error message,
so addition message is really redundant here. Remove it!

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20201127102451.17114-8-srinivas.kandagatla@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>