cpufreq: ondemand: Remove sync thread feature

This is redundant and racy, we are syncing cpu frequencies
in cpu-boost.
GPU Conservative GOV: Fix controls store, and init, all was 0!

now OK:

BEFORE:
1|root@g2:/sys/devices/fdb00000.qcom,kgsl-3d0/devfreq/fdb00000.qcom,kgsl-3d0/gpufreq/conservative # grep "." *
grep "." *
conservativeness:0
downthreshold:0
upthreshold_cons:0

AFTER:

root@g2:/sys/devices/fdb00000.qcom,kgsl-3d0/devfreq/fdb00000.qcom,kgsl-3d0/gpufreq/conservative # grep "." *
grep "." *
conservativeness:0
downthreshold:25
upthreshold_cons:50