Remove SQLNetworkService

As we've moved from using SQL to using CSV data, we should remove unneeded services and DAOs from our code to reduce confusion. The following classes should be removed:

• org.eclipsefoundation.geoip.client.service.impl.SQLNetworkService
• org.eclipsefoundation.geoip.client.dao.MariaDBDao

And the following test:

• org.eclipsefoundation.geoip.client.dao.MockMariaDBDao

We should also delete the following properties in the file src/main/resources/application.properties:

• quarkus.datasource.driver
• quarkus.datasource.url
• quarkus.datasource.username
• quarkus.datasource.min-size
• quarkus.datasource.max-size