diff --git a/source/scriptinterface/ScriptInterface.h b/source/scriptinterface/ScriptInterface.h
index da85611f46..cfa610c9e3 100644
--- a/source/scriptinterface/ScriptInterface.h
+++ b/source/scriptinterface/ScriptInterface.h
@@ -308,18 +308,6 @@ public:
 	 */
 	template<typename T> static bool FromJSProperty(JSContext* cx, const JS::HandleValue val, const char* name, T& ret);
 
-	/**
-	 * MaybeGC tries to determine whether garbage collection in cx's runtime would free up enough memory to be worth the amount of time it would take.
-	 * This calls JS_MaybeGC directly, which does not do incremental GC. Usually you should prefer MaybeIncrementalRuntimeGC.
-	 */
-	void MaybeGC();
-
-	/**
-	 * Triggers a full non-incremental garbage collection immediately. That should only be required in special cases and normally
-	 * you should try to use MaybeIncrementalRuntimeGC instead.
-	 */
-	void ForceGC();
-
 	/**
 	 * MathRandom (this function) calls the random number generator assigned to this ScriptInterface instance and
 	 * returns the generated number.