fixing swagger setup using localhost as host name (apache#13254)

pinot-common/src/main/java/org/apache/pinot/common/swagger/SwaggerSetupUtils.java

@@ -19,10 +19,8 @@
 package org.apache.pinot.common.swagger;
 
 import io.swagger.jaxrs.config.BeanConfig;
-import java.net.InetAddress;
 import java.net.URL;
 import java.net.URLClassLoader;
-import java.net.UnknownHostException;
 import org.apache.pinot.common.utils.PinotStaticHttpHandler;
 import org.apache.pinot.spi.utils.CommonConstants;
 import org.glassfish.grizzly.http.server.CLStaticHttpHandler;
@@ -50,12 +48,6 @@ public static void setupSwagger(String componentType, String resourcePackage, bo
     beanConfig.setResourcePackage(resourcePackage);
     beanConfig.setScan(true);
 
-    try {
-      beanConfig.setHost(InetAddress.getLocalHost().getHostName());
-    } catch (UnknownHostException e) {
-      throw new RuntimeException("Cannot get localhost name");
-    }
-
     ClassLoader classLoader = SwaggerSetupUtils.class.getClassLoader();
     CLStaticHttpHandler staticHttpHandler = new CLStaticHttpHandler(classLoader, "/api/");
     // map both /api and /help to swagger docs. /api because it looks nice. /help for backward compatibility