Remove useless import

Author: slandelle

client/src/main/java/org/asynchttpclient/netty/handler/intercept/Redirect30xInterceptor.java

@@ -23,7 +23,6 @@
 import io.netty.handler.codec.http.HttpHeaders;
 import io.netty.handler.codec.http.HttpResponse;
 import io.netty.handler.codec.http.HttpUtil;
-import io.netty.handler.codec.http.cookie.ClientCookieDecoder;
 import io.netty.handler.codec.http.cookie.Cookie;
 
 import java.util.HashSet;