FP3: power: use boost when flinging detected

* Remove touchboost for msm8937/msm8953/msm8996, since 'SCROLL_VERTICAL'
  switches 'sched_boost' to '1' forcing all tasks to switch to a big cluster,
  which can affect the power consumption and heat dissipation in some
  situations on some devices.

Change-Id: I3dfcad76e9ec3d89b46b106405291da8020b3176