msm8974: Tweak, fix and cleanup ramdisk:

* Remove useless scripts
* Remove only thermal engine call entries instead then touching system files
  https://github.com/franciscofranco/ramdisk_one_plus_one/commit/da8f686df06930a5649ff30a8cc983243fd0cfbb
* Cleanup

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>