While working on the grants for the new hosts I have realise that the old external store hosts and some other core hosts have a `wikiadmin2@%` user, which is not in use and has a different password from the current wikiadmin one.
Checking performance schema shows no connection from that user - most likely a user created for a password change/rotation.
Let's delete it.
es1:
[] es2013
[] es2012
[] es1018
[] es1016
[] es1012
es2:
[] es2016.codfw.wmnet
[] es2015.codfw.wmnet
[] es2014.codfw.wmnet
[] es1015.eqiad.wmnet
[] es1013.eqiad.wmnet
[] es1011.eqiad.wmnet
es3
[] es2019.codfw.wmnet
[] es2018.codfw.wmnet
[] es2017.codfw.wmnet
[] es1019.eqiad.wmnet
[] es1017.eqiad.wmnet
[] es1014.eqiad.wmnet
It also exists on some core hosts, on s7:
[x] dbstore1003.eqiad.wmnet
[] db2122.codfw.wmnet
[] db2121.codfw.wmnet
[] db2120.codfw.wmnet
[] db2118.codfw.wmnet
[] db2100.codfw.wmnet
[] db2095.codfw.wmnet
[] db2087.codfw.wmnet
[] db2086.codfw.wmnet
[] db2077.codfw.wmnet
[] db1136.eqiad.wmnet
[] db1125.eqiad.wmnet
[] db1116.eqiad.wmnet
[] db1101.eqiad.wmnet
[] db1098.eqiad.wmnet
[] db1094.eqiad.wmnet
[] db1090.eqiad.wmnet
[] db1086.eqiad.wmnet
[] db1079.eqiad.wmnet
x1:
[x] db2131.codfw.wmnet
[x] db2115.codfw.wmnet
[x] db2101.codfw.wmnet
[x] db2096.codfw.wmnet
pc1
[x] pc2010.codfw.wmnet
[x] pc2007.codfw.wmnet
[x] pc1010.eqiad.wmnet
[x] pc1007.eqiad.wmnet
pc2
[x] pc2008.codfw.wmnet
[x] pc1008.eqiad.wmnet
pc3
[x] pc2009.codfw.wmnet
[x] pc1009.eqiad.wmnet