Revert "kgsl: merge changes added on flo to make the alrgorithm a bit smarter."

This reverts commit 0d9bbfc821fb5b58204e93d16482094c0d6f2c7d.
Revert "kgsl: add back content to the sleep function for this tz routine. Also fix the length of the governor name for the sysfs entry."

This reverts commit 882ce3909f7fa0030aad74b3cb1e9002feabe1d4.
Revert "kgsl: add a new governor algorithm. Ditch the older Simple Governor to make place for Interactive. This name is chosen just to differentiate from the others, but it doesn't behave like the CPU governor Interactive. This uses a completely different algorithm to decide when to increase or decrease the GPU frequency. Also the functions tz_wake and tz_sleep don't do anything, they were a bit useless at this point after some testing."

This reverts commit 1a2bd506e5c118e0bea676d2e3f75856ccd55a55.
Revert "msm: kgsl: we don't need this routine anymore. We save CPU cycles not going through this small, now deleted, piece of code."

This reverts commit 1b03150b83269677212037082827379031f63140.
Revert "msm: kgsl: forgot to add the header for the Simple Governor on the latest revert and re-add."

This reverts commit 07276dc58c5a63470a72dcf46d314075997fe5e2.
Revert "msm: kgsl: re-add Simple Governor."

This reverts commit f0b3496acedc3124ba51feb229c9e1ec1d7bec8a.