Removed unused import from ConfigurationProviderHTTP

Change-Id: I2f7eb419790f3d44d0471efcdac818f17171ebe2
Reviewed-on: http://review.couchbase.org/7104
Tested-by: Michael Wiederhold <mike@couchbase.com>
Reviewed-by: Matt Ingenthron <matt@couchbase.com>

src/main/java/net/spy/memcached/vbucket/ConfigurationProviderHTTP.java

@@ -8,7 +8,6 @@
 import java.net.InetSocketAddress;
 import java.net.URLConnection;
 import java.net.HttpURLConnection;
-import java.net.Authenticator;
 import java.net.URL;
 import java.io.IOException;
 import java.io.InputStream;