removed methods not supported by new solrj connector for httpclient 4

Error was:
java.lang.UnsupportedOperationException: Client was created outside of
HttpSolrServer
	at
org.apache.solr.client.solrj.impl.HttpSolrServer.setDefaultMaxConnectionsPerHost(HttpSolrServer.java:614)
	at
net.yacy.cora.services.federated.solr.SolrSingleConnector.<init>(SolrSingleConnector.java:128)
	at
net.yacy.cora.services.federated.solr.SolrShardingConnector.<init>(SolrShardingConnector.java:55)
	at net.yacy.search.Switchboard.<init>(Switchboard.java:657)
	at net.yacy.yacy.startup(yacy.java:222)
	at net.yacy.yacy.main(yacy.java:1018)

source/net/yacy/cora/services/federated/solr/SolrSingleConnector.java

@@ -125,8 +125,6 @@ public class SolrSingleConnector implements SolrConnector {
         } else {
             this.server = new HttpSolrServer(this.solrurl);
         }
-        this.server.setDefaultMaxConnectionsPerHost( 128 );
-        this.server.setMaxTotalConnections( 256 );
 
         // start worker
         this.transmissionWorker = new Worker[transmissionQueueCount];