Config file changes and correct prefix usage

Updated users-accounting-summary.tsql to use @PREFIX@ instead of @TP@
Removed accounting summary plugin from config file, users can optionally include it

database/users-accounting-summary.tsql

-ALTER TABLE @TP@users ADD COLUMN PeriodKey VARCHAR(255);
-ALTER TABLE @TP@users ADD COLUMN TotalTraffic @INT_UNSIGNED@;
-ALTER TABLE @TP@users ADD COLUMN TotalUptime @INT_UNSIGNED@;
-ALTER TABLE @TP@users ADD COLUMN NASIdentifier VARCHAR(255);
+ALTER TABLE @PREFIX@users ADD COLUMN PeriodKey VARCHAR(255);
+ALTER TABLE @PREFIX@users ADD COLUMN TotalTraffic @INT_UNSIGNED@;
+ALTER TABLE @PREFIX@users ADD COLUMN TotalUptime @INT_UNSIGNED@;
+ALTER TABLE @PREFIX@users ADD COLUMN NASIdentifier VARCHAR(255);

smradiusd.conf

@@ -156,7 +156,6 @@ EOT
 [features]
 modules=<<EOT
 mod_feature_capping
-mod_feature_update_user_stats_sql
 EOT