Continue structural port from Spring Boot to Undertow

src/main/java/io/kamax/mxisd/backend/rest/RestDirectoryProvider.java

@@ -23,19 +23,18 @@ package io.kamax.mxisd.backend.rest;
 import io.kamax.matrix.MatrixID;
 import io.kamax.mxisd.config.MatrixConfig;
 import io.kamax.mxisd.config.rest.RestBackendConfig;
-import io.kamax.mxisd.directory.IDirectoryProvider;
+import io.kamax.mxisd.directory.DirectoryProvider;
 import io.kamax.mxisd.exception.InternalServerError;
 import io.kamax.mxisd.http.io.UserDirectorySearchRequest;
 import io.kamax.mxisd.http.io.UserDirectorySearchResult;
 import io.kamax.mxisd.util.RestClientUtils;
 import org.apache.commons.io.IOUtils;
-import org.apache.commons.lang.StringUtils;
 import org.apache.http.client.methods.CloseableHttpResponse;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 
-public class RestDirectoryProvider extends RestProvider implements IDirectoryProvider {
+public class RestDirectoryProvider extends RestProvider implements DirectoryProvider {
 
     private MatrixConfig mxCfg;
 
@@ -44,11 +43,6 @@ public class RestDirectoryProvider extends RestProvider implements IDirectoryPro
         this.mxCfg = mxCfg;
     }
 
-    @Override
-    public boolean isEnabled() {
-        return cfg.isEnabled() && StringUtils.isNotBlank(cfg.getEndpoints().getDirectory());
-    }
-
     private UserDirectorySearchResult search(String by, String query) {
         UserDirectorySearchRequest request = new UserDirectorySearchRequest(query);
         request.setBy(by);

src/main/java/io/kamax/mxisd/backend/rest/RestProfileProvider.java

@@ -55,11 +55,6 @@ public class RestProfileProvider extends RestProvider implements ProfileProvider
         super(cfg);
     }
 
-    @Override
-    public boolean isEnabled() {
-        return cfg.isEnabled() && cfg.getEndpoints().getProfile().isPresent();
-    }
-
     private <T> Optional<T> doRequest(
             _MatrixID userId,
             Function<RestBackendConfig.ProfileEndpoints, Optional<String>> endpoint,

src/main/java/io/kamax/mxisd/backend/rest/RestThreePidProvider.java

@@ -62,11 +62,6 @@ public class RestThreePidProvider extends RestProvider implements IThreePidProvi
         }
     }
 
-    @Override
-    public boolean isEnabled() {
-        return cfg.isEnabled();
-    }
-
     @Override
     public boolean isLocal() {
         return true;