Implement device type versions delete and dis-eroll devices methods

components/mobile-plugins/android-plugin/org.wso2.carbon.device.mgt.mobile.android.core/src/test/java/org/wso2/carbon/device/mgt/mobile/android/core/mokcs/DeviceManagementProviderServiceMock.java

@@ -78,6 +78,17 @@ import java.util.List;
 import java.util.Map;
 
 public class DeviceManagementProviderServiceMock implements DeviceManagementProviderService {
+    @Override
+    public boolean deleteDeviceTypeVersions(DeviceType deviceType)
+            throws DeviceManagementException {
+        return false;
+    }
+
+    @Override
+    public void disEnrollDevices(List<Device> list) throws DeviceManagementException {
+
+    }
+
     @Override
     public List<Device> getAllDevices(String s) throws DeviceManagementException {
         return null;