Cleanup unused utils (#832)

* Remove api.optionsSave

* Remove getOptionsMutable and getOptionsFullMutable

* Remove util.js

* Remove yomichanBackend

1 files changed, 0 insertions, 29 deletions

diff --git a/ext/bg/js/util.js b/ext/bg/js/util.js
deleted file mode 100644
index a0f31653..00000000
--- a/ext/bg/js/util.js
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2016-2020  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-function utilBackgroundIsolate(data) {
-    const backgroundPage = chrome.extension.getBackgroundPage();
-    return backgroundPage.clone(data);
-}
-
-function utilBackend() {
-    const backend = chrome.extension.getBackgroundPage().yomichanBackend;
-    if (!backend.isPrepared()) {
-        throw new Error('Backend not ready yet');
-    }
-    return backend;
-}