diff --git a/epapi/epapi.js b/epapi/epapi.js
index d9c0ead..0c5259b 100644
--- a/epapi/epapi.js
+++ b/epapi/epapi.js
@@ -223,10 +223,6 @@ function evaluate(str, exportsR) {
             // expose EPAPI as $api, which is what most plugins expect it to be known as
             window.$api = exports;
 
-            // extension methods used in some older plugins, maintained for compatibility
-            String.prototype.replaceAll = function (search, replacement) { return this.split(search).join(replacement) };
-            Array.prototype.contains = function (s) { return this.indexOf(s) != -1 };
-
             // derive the date of creation from a discord snowflake id
             Date.fromSnowflake = (id) => new Date((id / 4194304) + 1420070400000);