Removes database dependencies in DatabaseQueryUnitTest

DatabaseQueryUnitTest mocks the database and there is no need to create
a testing database. Therefore, the TestUtils method calls to initialize
and clear the testing database where removed.

src/test/java/es/uvigo/esei/daa/DatabaseQueryUnitTest.java

@@ -30,14 +30,11 @@ public abstract class DatabaseQueryUnitTest {
 	@BeforeClass
 	public static void setUpBeforeClass()
 	throws Exception {
-		TestUtils.clearTestDatabase();
 		TestUtils.clearContextBuilder();
 	}
 
 	@Before
 	public void setUp() throws Exception {
-		TestUtils.initTestDatabase();
-		
 		datasource = createMock(DataSource.class);
 		connection = createMock(Connection.class);
 		statement = createNiceMock(PreparedStatement.class);
@@ -70,7 +67,6 @@ public abstract class DatabaseQueryUnitTest {
 	
 	@After
 	public void tearDown() throws Exception {
-		TestUtils.clearTestDatabase();
 		TestUtils.clearContextBuilder();
 		
 		try {