[DOCS] Remove 6.8.14 coming tag (#68779)

Author: jrodewig

docs/reference/release-notes/6.8.asciidoc

@@ -1,8 +1,6 @@
 [[release-notes-6.8.14]]
 == {es} version 6.8.14
 
-coming::[6.8.14]
-
 Also see <<breaking-changes-6.8,Breaking changes in 6.8>>.
 
 [[bug-6.8.14]]