diff --git a/cache/classes/definition.php b/cache/classes/definition.php
index 0e5c62e44ba..79faadee48a 100644
--- a/cache/classes/definition.php
+++ b/cache/classes/definition.php
@@ -246,14 +246,6 @@ class cache_definition {
      */
     protected $datasourcefile = null;
 
-    /**
-     * Deprecated - this is completely unused.
-     * @deprecated since 2.9
-     * @todo MDL-55267 This will be deleted in Moodle 3.3.
-     * @var string
-     */
-    protected $datasourceaggregate = null;
-
     /**
      * Set to true if the cache should hold onto items passing through it to speed up subsequent requests.
      * @var bool
diff --git a/cache/tests/fixtures/lib.php b/cache/tests/fixtures/lib.php
index c6b405b3e66..ac212542631 100644
--- a/cache/tests/fixtures/lib.php
+++ b/cache/tests/fixtures/lib.php
@@ -290,21 +290,6 @@ class cache_config_testing extends cache_config_writer {
     }
 }
 
-/**
- * This is a deprecated class. It has been renamed to cache_config_testing.
- *
- * This was deprecated in Moodle 2.9 but will be removed at the next major release
- * as it is only used during testing and its highly unlikely anyone has used this.
- *
- * @deprecated since 2.9
- * @todo MDL-55267 This will be deleted in Moodle 3.3.
- * @copyright  2014 Sam Hemelryk
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-class cache_config_phpunittest extends cache_config_testing {
-    // We can't do anything here to warn the user.
-    // The cache can be utilised before sessions have even been started.
-}
 
 /**
  * Dummy object for testing cacheable object interface and interaction