API Remove deprecated methods.

These methods are not in use and have been deprecated since fluent 5.

src/Extension/FluentExtension.php

@@ -7,7 +7,6 @@
 use SilverStripe\Core\Config\Config;
 use SilverStripe\Core\Convert;
 use SilverStripe\Core\Extension;
-use SilverStripe\Dev\Deprecation;
 use SilverStripe\Forms\FieldList;
 use SilverStripe\Forms\FormField;
 use SilverStripe\Forms\GridField\GridField_ActionMenuItem;
@@ -1045,19 +1044,6 @@ public function getLocaleInstances(): array
         return $locales;
     }
 
-    /**
-     * Return the linking mode for the current locale and object
-     *
-     * @param string $locale
-     * @return string
-     * @deprecated 5.0 use LocaleInformation() instead
-     */
-    public function getLinkingMode($locale)
-    {
-        Deprecation::notice('5.0', 'Use LocaleInformation instead');
-        return $this->LocaleInformation($locale)->getLinkingMode();
-    }
-
     /**
      * Determine the baseurl within a specified $locale.
      *
@@ -1073,17 +1059,6 @@ public function BaseURLForLocale($locale)
         return $localeObject->getBaseURL();
     }
 
-    /**
-     * @param string $locale
-     * @return string
-     * @deprecated Use LocaleInformation instead
-     */
-    public function LocaleLink($locale)
-    {
-        Deprecation::notice('5.0', 'Use LocaleInformation instead');
-        return $this->LocaleInformation($locale)->getLink();
-    }
-
     /**
      * Ensure has_one cache is segmented by locale
      *