remove conversion to sec from disk_io_time

remove conversion to sec from host overview dashboard since telegraph
disk_io_time is already in seconds.

Change-Id: I7993add1fdf2d0351bc914c04dca2a4e70b8e7aa
Related-Prod: PROD-30652
(cherry picked from commit 75718b34b5300d5d7d3132df5de1f0e9656cf38c)
1 file changed