[DOCS] Removes tags from 7.x release docs (elastic#39547)

Author: gchaps

docs/CHANGELOG.asciidoc

@@ -26,14 +26,11 @@ This section summarizes the changes in each release.
 [[release-notes-7.2.0]]
 == {kib} 7.2.0
 
-coming[7.2.0]
-
-
 [float]
 [[breaking-7.2.0]]
 === Breaking Changes
 
-See <<breaking-changes-7.2, Breaking changes in 7.2>> for more information.
+See <<breaking-changes-7.2, breaking changes in 7.2>> for more information.
 
 Index Patterns::
 * Removes support for time-based interval index patterns with migration {pull}35262[#35262]

docs/migration/migrate_7_2.asciidoc

@@ -7,9 +7,7 @@
 This section discusses the changes that you need to be aware of when migrating
 your application to Kibana 7.2.
 
-See also <<release-highlights>> and <<release-notes>>.
-
-coming[7.2.0]
+See also <<release-highlights-7.2.0, release highlights>> and <<release-notes-7.2.0, release notes>>.
 
 [float]
 [[breaking_72_index_pattern_changes]]

docs/release-notes/highlights-7.2.0.asciidoc

@@ -4,12 +4,10 @@
 <titleabbrev>7.2.0</titleabbrev>
 ++++
 
-coming[7.2.0]
-
 Each release of {kib} brings new features and product improvements. 
 Here are the highlights of the feature and user experience changes in 7.2.0.
 
-Refer to the {kib} <<breaking-changes-7.2, breaking changes>> and <<release-notes, 
+Refer to the {kib} <<breaking-changes-7.2, breaking changes>> and <<release-notes-7.2.0, 
 release notes>> for a list of bug fixes and other changes.
 
 //NOTE: The notable-highlights tagged regions are re-used in the