diff --git a/html/sw.js b/html/sw.js
index 5edc0e3..8e535d6 100644
--- a/html/sw.js
+++ b/html/sw.js
@@ -30,15 +30,6 @@ self.addEventListener('fetch', function (evt) {
}));
});
-function precache() {
- return caches.open(CACHE).then(function (cache) {
- return cache.addAll([
- './controlled.html',
- './asset'
- ]);
- });
-}
-
function fromNetwork(request, timeout) {
return new Promise(function (fulfill, reject) {
var timeoutId = setTimeout(reject, timeout);