Revert "Base: update Immersive mode"

This reverts commit c819a3185f371a6b68eb6ac9cadc0511bec1cb74, reversing
changes made to d3317d5546f64c1ac46c63f4fcb28e7650332f6b.
Revert "Merge commit 'refs/changes/57/5657/10' of https://gerrit.omnirom.org/android_frameworks_base into omni-android-4.4"

This reverts commit d3317d5546f64c1ac46c63f4fcb28e7650332f6b, reversing
changes made to 54cebf3a5ac2aef3e07861d6fb4a458b646e6806.