diff --git a/libraries/src/Helper/TagsHelper.php b/libraries/src/Helper/TagsHelper.php
index d461b60ddf266..8383a7267b2b5 100644
--- a/libraries/src/Helper/TagsHelper.php
+++ b/libraries/src/Helper/TagsHelper.php
@@ -813,26 +813,6 @@ public static function getTypes($arrayType = 'objectList', $selectTypes = null,
         return $types;
     }
 
-    /**
-     * Function that handles saving tags used in a table class after a store()
-     *
-     * @param   TableInterface  $table    Table being processed
-     * @param   array           $newTags  Array of new tags
-     * @param   boolean         $replace  Flag indicating if all existing tags should be replaced
-     *
-     * @return  boolean
-     *
-     * @since   3.1
-     *
-     * @deprecated  5.3 will be removed in 7.0
-     */
-    public function postStoreProcess(TableInterface $table, $newTags = [], $replace = true)
-    {
-        @trigger_error('7.0 Method postStoreProcess() is deprecated, use postStore() instead.', \E_USER_DEPRECATED);
-
-        $this->postStore($table, (array) $newTags, (bool) $replace);
-    }
-
     /**
      * Function that handles saving tags used in a table class after a store().
      *
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 0af8782d81f55..081580ca6d4a7 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -10777,12 +10777,6 @@ parameters:
 			count: 4
 			path: libraries/src/Helper/TagsHelper.php
 
-		-
-			message: '#^Method Joomla\\CMS\\Helper\\TagsHelper\:\:postStoreProcess\(\) should return bool but return statement is missing\.$#'
-			identifier: return.missing
-			count: 1
-			path: libraries/src/Helper/TagsHelper.php
-
 		-
 			message: '''
 				#^Call to deprecated method getDbo\(\) of class Joomla\\CMS\\Factory\: