[DOCS] Remove 6.8.14 coming tag (#1577)

Author: jrodewig

docs/src/reference/asciidoc/appendix/release-notes/6.8.14.adoc

@@ -1,7 +1,5 @@
 [[eshadoop-6.8.14]]
 == Elasticsearch for Apache Hadoop version 6.8.14
 
-coming::[6.8.14]
-
 ES-Hadoop 6.8.14 is a version compatibility release,
 tested specifically against Elasticsearch 6.8.14.