Fixed deprecation warning

Author: ok2c

httpcore5/src/main/java/org/apache/hc/core5/http/impl/bootstrap/AsyncServerBootstrap.java

@@ -59,7 +59,6 @@
 import org.apache.hc.core5.http.nio.support.DefaultAsyncResponseExchangeHandlerFactory;
 import org.apache.hc.core5.http.nio.support.TerminalAsyncServerFilter;
 import org.apache.hc.core5.http.protocol.HttpProcessor;
-import org.apache.hc.core5.http.protocol.LookupRegistry;
 import org.apache.hc.core5.http.protocol.UriPatternType;
 import org.apache.hc.core5.net.InetAddressUtils;
 import org.apache.hc.core5.net.URIAuthority;
@@ -238,7 +237,7 @@ public final AsyncServerBootstrap setIOSessionListener(final IOSessionListener s
      * @deprecated Use {@link RequestRouter}.
      */
     @Deprecated
-    public final AsyncServerBootstrap setLookupRegistry(final LookupRegistry<Supplier<AsyncServerExchangeHandler>> lookupRegistry) {
+    public final AsyncServerBootstrap setLookupRegistry(final org.apache.hc.core5.http.protocol.LookupRegistry<Supplier<AsyncServerExchangeHandler>> lookupRegistry) {
         this.lookupRegistry = lookupRegistry;
         return this;
     }