romulus: Remove avbus-workaround

This was a workaround for DD1 (pre-production) hardware.

Jordan Keuseman <jkeusema@us.ibm.com> wrote:
 > That was an issue back in DD1 time frame where the VRM needed to
 > change their signal voltage thresholds for AVS bus to work around a
 > problem where the processor was putting out a runt pulse in the final
 > bit of the transaction. They fixed that in the silicon so we got rid
 > of the work around.

This was removed from Witherspoon when dropping DD1 support from
OpenBMC. We can remove it from Romulus and other platforms too.

Change-Id: I3b7019387c0d924360ccad5833159cc33f75ae47
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/meta-romulus/recipes-phosphor/chassis/avsbus-control/avsbus-disable@.service b/meta-romulus/recipes-phosphor/chassis/avsbus-control/avsbus-disable@.service
index 424aa23..38c1e85 100644
--- a/meta-romulus/recipes-phosphor/chassis/avsbus-control/avsbus-disable@.service
+++ b/meta-romulus/recipes-phosphor/chassis/avsbus-control/avsbus-disable@.service
@@ -1,7 +1,7 @@
 [Unit]
 Description=Disable the AVS bus on the VRMs
-Wants=avsbus-workaround@%i.service
-After=avsbus-workaround@%i.service
+Wants=op-power-start@.service
+After=op-power-start@.service
 Before=vrm-control@%i.service
 Conflicts=obmc-chassis-poweroff@%i.target
 ConditionPathExists=!/run/openbmc/chassis@%i-on