Deprecate all accounts functionality and make it only accessible by using -deprecatedrpc=accounts
.
Accounts specific RPCs, account arguments, and account related results all require the -deprecatedrpc=acocunts
startup option now in order to see account things.
A couple of the tests use the accounts system for labeling things, so instead of changing those, I left them as is and set the tests to start the nodes with -deprecatedrpc=accounts
. That switch can be removed as those RPCs are replaced with a labels system.