init.hardware.rc: Restore I/O performance As one can see in cfq_arm_slice_timer(), the CFQ I/O scheduler supports two parameters that can make it delay I/O: group_idle and slice_idle. Restore I/O performance by setting both the group_idle and slice_idle parameters to zero. Bug: 213617178 Bug: 313578691 Change-Id: I02429876790a6456ca957ff7c38f0c8bf88127f9 Signed-off-by: Bart Van Assche <bvanassche@google.com>