remove unused system.out

frameworks/Java/light-java/src/main/java/com/networknt/techempower/db/mysql/MysqlStartupHookProvider.java

@@ -15,8 +15,6 @@ public class MysqlStartupHookProvider implements StartupHookProvider {
     @Override
     public void onStartup() {
         initDataSource();
-        System.out.println("MysqlStartupHookProvider ds = " + ds);
-
     }
 
     static void initDataSource() {

frameworks/Java/light-java/src/main/java/com/networknt/techempower/db/postgres/PostgresStartupHookProvider.java

@@ -15,7 +15,6 @@ public class PostgresStartupHookProvider implements StartupHookProvider {
     @Override
     public void onStartup() {
         initDataSource();
-        System.out.println("PostgresStartupHookProvider ds = " + ds);
     }
 
     static void initDataSource() {