has_opp_table isn't used anymore, remove it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

Link: https://lore.kernel.org/r/08ec1ee1d4252a266956abb5f1e0e0026d753564.1603867487.git.viresh.kumar@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>