Remove redundant code from uptime test

OBMC Reboot (off) keyword has in-built logic to check for standby.

Resolves  openbmc/openbmc-test-automation#1338

Change-Id: Ifb360464fe42fe946d415dcc2df8eb515c4bb554
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
1 file changed