add refactored stuff

components/certificate-mgt/org.wso2.carbon.certificate.mgt.api/src/main/java/org/wso2/carbon/certificate/mgt/jaxrs/api/CertificateMgtService.java

@@ -6,7 +6,6 @@ import io.swagger.annotations.ApiResponse;
 import io.swagger.annotations.ApiResponses;
 import org.wso2.carbon.apimgt.annotations.api.Permission;
 import org.wso2.carbon.certificate.mgt.jaxrs.beans.ErrorResponse;
-import org.wso2.carbon.device.mgt.common.device.details.DeviceLocation;
 
 import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
@@ -56,4 +55,6 @@ public interface CertificateMgtService {
             @HeaderParam("If-Modified-Since") String ifModifiedSince,
             String binarySecurityToken);
 
+    Response getCA();
+
 }

components/certificate-mgt/org.wso2.carbon.certificate.mgt.api/src/main/java/org/wso2/carbon/certificate/mgt/jaxrs/api/impl/CertificateMgtServiceImpl.java

@@ -53,4 +53,10 @@ public class CertificateMgtServiceImpl implements CertificateMgtService {
                     500l).setMessage(msg).build());
         }
     }
+
+    @POST
+    @Path("/ca")
+    public Response getCA() {
+
+    }
 }

components/certificate-mgt/org.wso2.carbon.certificate.mgt.core/src/main/java/org/wso2/carbon/certificate/mgt/core/service/CertificateManagementServiceImpl.java

@@ -17,7 +17,6 @@
  */
 package org.wso2.carbon.certificate.mgt.core.service;
 
-import com.sun.org.apache.xpath.internal.operations.Bool;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.bouncycastle.pkcs.PKCS10CertificationRequest;
@@ -33,7 +32,6 @@ import org.wso2.carbon.certificate.mgt.core.util.ConfigurationUtil;
 import org.wso2.carbon.device.mgt.common.PaginationRequest;
 import org.wso2.carbon.device.mgt.common.PaginationResult;
 import org.wso2.carbon.device.mgt.common.TransactionManagementException;
-import org.wso2.carbon.device.mgt.core.operation.mgt.dao.OperationManagementDAOFactory;
 
 import java.io.InputStream;
 import java.security.PrivateKey;