API Removed deprecated Session::set_config()

docs/en/04_Changelogs/4.0.0.md

@@ -1283,6 +1283,7 @@ After (`mysite/_config/config.yml`):
   - `getModules`
   - `getConfigDirs`
   - `getConfigs`
+* Removed `Session::set_config()` and `Session::get_config()`. Use the `Session.timeout` config setting instead
 
 #### <a name="overview-general-deprecated"></a>General and Core Deprecated API
 
@@ -1817,4 +1818,4 @@ New `TimeField` methods replace `getConfig()` / `setConfig()`
    you will need to define this method and return a short name describing the login method.
  * `MemberLoginForm` has a new constructor argument for the authenticator class, athough tis is usually
    constructed by `MemberAuthenticator` and won't affect normal use.
- * `Authenticator` methods `register` and `unregister` are deprecated in favor of using `Config`
+ * `Authenticator` methods `register` and `unregister` are deprecated in favor of using `Config`

src/Control/Session.php

@@ -544,26 +544,4 @@ class Session
     {
         self::current_session()->inst_destroy($removeCookie);
     }
-
-    /**
-     * Set the timeout of a Session value
-     *
-     * @deprecated 4.0 Use the "Session.timeout" config setting instead
-     *
-     * @param int $timeout Time until a session expires in seconds. Defaults to expire when browser is closed.
-     */
-    public static function set_timeout($timeout)
-    {
-        Deprecation::notice('4.0', 'Use the "Session.timeout" config setting instead');
-        Config::inst()->update('SilverStripe\\Control\\Session', 'timeout', (int) $timeout);
-    }
-
-    /**
-     * @deprecated 4.0 Use the "Session.timeout" config setting instead
-     */
-    public static function get_timeout()
-    {
-        Deprecation::notice('4.0', 'Use the "Session.timeout" config setting instead');
-        return Config::inst()->get('SilverStripe\\Control\\Session', 'timeout');
-    }
 }