Default connection pool C3P0

Reported by: @Aikimaniac

L2J_Server/dist/game/config/Server.properties

@@ -60,7 +60,7 @@ Password =
 # Database Connection Pool
 # Default: C3P0
 # Available: C3P0, HikariCP
-ConnectionPool = HikariCP
+ConnectionPool = C3P0
 
 # Default: 100
 MaximumDbConnections = 100