Remove duplicate metric for operator errors

[Starttoaster]

When reviewing the metrics endpoint of the operator, I discovered there's a metric that is automatically created by controller-runtime to count errors for a particular controller. This is way more useful than this manually collected metric for the operator as a whole.

# HELP controller_runtime_terminal_reconcile_errors_total Total number of terminal reconciliation errors per controller
# TYPE controller_runtime_terminal_reconcile_errors_total counter
controller_runtime_terminal_reconcile_errors_total{controller="chiaca"} 0
controller_runtime_terminal_reconcile_errors_total{controller="chiacrawler"} 0
controller_runtime_terminal_reconcile_errors_total{controller="chiafarmer"} 0
controller_runtime_terminal_reconcile_errors_total{controller="chiaharvester"} 0
controller_runtime_terminal_reconcile_errors_total{controller="chiaintroducer"} 0
controller_runtime_terminal_reconcile_errors_total{controller="chianode"} 0
controller_runtime_terminal_reconcile_errors_total{controller="chiaseeder"} 0
controller_runtime_terminal_reconcile_errors_total{controller="chiatimelord"} 0
controller_runtime_terminal_reconcile_errors_total{controller="chiawallet"} 0