meta-romulus: Remove P9 host watchdog workaround

Remove the watchdog workaround patch from meta-romulus;
And remove the patch itself since no machine is using it anymore.

Change-Id: I2a1d8cbce3637562a35f738fce8c6bea2738528c
Signed-off-by: Lei YU <mine260309@gmail.com>
1 file changed