Remove IcuCollationTokenFilterFactory

[nik9000]

ICUCollationKeyFilter has been removed from Lucene 5 but its sitting around in Elasticsearch in the ICU plugin and just marked as deprecated. We should come up with a strategy to migrate from it to ICUCollationDocValuesField like the docs say to do.

[clintongormley]

Related to #13149

[Tenzil]

As you said deprecated, How can i use ICU . is there any alternative way is it brought in Elastic Search ?. Or just tell how can i moves alphanumeric values to down of the result sets