firmware: qcom_scm: Remove unused qcom_scm_get_version

Remove unused qcom_scm_get_version.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Tested-by: Brian Masney <masneyb@onstation.org> # arm32
Tested-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
Link: https://lore.kernel.org/r/1578431066-19600-4-git-send-email-eberman@codeaurora.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>