Remove fsync [SQUASHED]

Revert "fs: sync: add missing return if fsync is disabled from userspace."

This reverts commit 1be7d8a4ff8e5ca3a696ef25aff81512a9018e2b.

Revert "fs: sync: enable fsync by default."

This reverts commit 39e8c0f0a37494c980b2542056c1bc11b5a2ecf6.

Change-Id: I36f8ecbcd4599306dc916685e5ecea1885694dfc

Revert "Added fsync on/off support."

This reverts commit 080cd37665332f787a1bc946b8af1e3408e22bb4.

Change-Id: Ia4f3083efb5bfa441d04f371b800a7c03052a823
Asynchronous Fsync: Initial extraction of Async Fsync from HTC

Signed-off-by: Paul Reioux <reioux@gmail.com>
Change-Id: Iaaf157cf813bbce499638703e4e6a98f26b968b0