fix checkstyles issues

Author: lashinijay

components/org.wso2.carbon.identity.oauth.endpoint/src/main/java/org/wso2/carbon/identity/oauth/endpoint/oidcdiscovery/OIDCDiscoveryEndpoint.java

@@ -28,7 +28,6 @@
 import org.wso2.carbon.identity.discovery.OIDCProcessor;
 import org.wso2.carbon.identity.discovery.builders.OIDProviderResponseBuilder;
 import org.wso2.carbon.identity.oauth.common.OAuthConstants;
-import org.wso2.carbon.identity.oauth.endpoint.oidcdiscovery.impl.OIDProviderJSONResponseBuilder;
 import org.wso2.carbon.identity.oauth.endpoint.util.factory.OIDCProviderServiceFactory;
 
 import javax.servlet.http.HttpServletRequest;

components/org.wso2.carbon.identity.oauth.endpoint/src/main/java/org/wso2/carbon/identity/oauth/endpoint/oidcdiscovery/OIDCDiscoveryServiceFactory.java

@@ -18,7 +18,6 @@
 
 package org.wso2.carbon.identity.oauth.endpoint.oidcdiscovery;
 
-import org.wso2.carbon.context.PrivilegedCarbonContext;
 import org.wso2.carbon.identity.discovery.builders.OIDProviderResponseBuilder;
 import org.wso2.carbon.identity.oauth.endpoint.oidcdiscovery.impl.OIDProviderJSONResponseBuilder;