diff --git a/mailpoet/lib/EmailEditor/Engine/SettingsController.php b/mailpoet/lib/EmailEditor/Engine/SettingsController.php
index aa2f4745a5..8bdf343a2b 100644
--- a/mailpoet/lib/EmailEditor/Engine/SettingsController.php
+++ b/mailpoet/lib/EmailEditor/Engine/SettingsController.php
@@ -38,8 +38,6 @@ class SettingsController {
    */
   const FLEX_GAP = '16px';
 
-  private string $availableStylesheets = '';
-
   private ThemeController $themeController;
 
   /**
@@ -95,13 +93,6 @@ class SettingsController {
     ];
   }
 
-  public function getAvailableStylesheets(): string {
-    if ($this->availableStylesheets) return $this->availableStylesheets;
-    $coreThemeData = \WP_Theme_JSON_Resolver::get_core_data();
-    $this->availableStylesheets = $coreThemeData->get_stylesheet();
-    return $this->availableStylesheets;
-  }
-
   /**
    * @return array{width: string, background: string, padding: array{bottom: string, left: string, right: string, top: string}}
    */