LPS-48181 Remove not needed code, as the ant-arquillian library is responsible for performing those tasks

cc/ @arboliveira @brandizzi. I've converted to integration tests again, as with Arquillian is super easy/fast to run.

```shell
[junit] Running com.liferay.calendar.service.CalendarLocalServiceTest
    [junit] Testsuite: com.liferay.calendar.service.CalendarLocalServiceTest
    [junit] jul 31, 2014 10:35:12 AM org.jboss.arquillian.container.tomcat.ProtocolMetadataParser connect
    [junit] INFORMACIÓN: Connecting to JMX at service:jmx:rmi:///jndi/rmi://localhost:8098/jmxrmi
    [junit] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 16,481 sec
    [junit] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 16,481 sec
    [junit]
    [junit] Running com.liferay.calendar.util.RecurrenceUtilTest
    [junit] Testsuite: com.liferay.calendar.util.RecurrenceUtilTest
    [junit] jul 31, 2014 10:35:26 AM org.jboss.arquillian.container.tomcat.ProtocolMetadataParser connect
    [junit] INFORMACIÓN: Connecting to JMX at service:jmx:rmi:///jndi/rmi://localhost:8098/jmxrmi
    [junit] Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13,242 sec
    [junit] Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13,242 sec
    [junit]
```
I'm not sure about the tests logic, that's why I'm resending you back.

And please tell me or @cgoncas about how to setup the environment if you cannot make it.

Cheers!