staging: iio: light: ltr659: remove suspend resume

staging: iio: light: ltr659: remove suspend resume

ltr659 resume callback waits for 600 msec as ltr558 needed power on
delay. This affects device resume time as all devices use same
thread to resume.

Removing the delay for ltr659 could resolve this issue, but since
Sensorservice takes care of enabling/disabling the sensor device as
required, suspend/resume remain a overhead anyway. So, remove them.

Bug 200002359

Change-Id: Ib847cc015ae3169c45c25d252588e9439da9b1d3
Signed-off-by: Sri Krishna chowdary <schowdary@nvidia.com>
Reviewed-on: http://git-master/r/408755
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>