diff --git a/escapeJsonStr.js b/escapeJsonStr.js
deleted file mode 100644
index a4552c6..0000000
--- a/escapeJsonStr.js
+++ /dev/null
@@ -1,10 +0,0 @@
-/* Escape json string.
- */
-
-_('escapeJsStr')
-
-exports = function (str) {
-  return escapeJsStr(str)
-    .replace(/\\'/g, "'")
-    .replace(/\t/g, '\\t')
-}