DeviceSettings: remove dynamic fsync

No clue why removePreference is not working here. TODO later.

Change-Id: Ie53ec4af3c97179b117ac1041bd89d2417aad5d1
Merge branch 'cm-11.0' of https://github.com/AceEnablementProject/android_device_htc_msm7x30-common into cd-4.4