Removed unnecessary interace methods from Device Manager

components/device-mgt-extensions/org.wso2.carbon.device.mgt.extensions.device.type.deployer/src/main/java/org/wso2/carbon/device/mgt/extensions/device/type/deployer/template/DeviceTypeManager.java

@@ -389,8 +389,7 @@ public class DeviceTypeManager implements DeviceManager {
         return requiredDeviceTypeAuthorization;
     }
 
-    @Override
-    public PlatformConfiguration getDefaultConfiguration() throws DeviceManagementException {
+    private PlatformConfiguration getDefaultConfiguration() throws DeviceManagementException {
 
         if (log.isDebugEnabled()) {
             log.debug("Loading default " + deviceType + " platform configuration from " + deviceType +

components/device-mgt/org.wso2.carbon.device.mgt.common/src/main/java/org/wso2/carbon/device/mgt/common/DeviceManager.java

@@ -157,13 +157,4 @@ public interface DeviceManager {
      */
     boolean requireDeviceAuthorization();
 
-    /**
-     * This method returns the default configuration values which is stored in the configuration file
-     * rather than fetching from the registry.
-     *
-     * @return Returns Default PlatformConfiguration
-     * @throws DeviceManagementException
-     */
-    PlatformConfiguration getDefaultConfiguration() throws DeviceManagementException;
-
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestDeviceManager.java

@@ -121,9 +121,4 @@ public class TestDeviceManager implements DeviceManager {
         return false;
     }
 
-    @Override
-    public PlatformConfiguration getDefaultConfiguration() throws DeviceManagementException {
-        return null;
-    }
-
 }