diff --git a/lib/javascripts/locale/pl.js b/lib/javascripts/locale/pl.js
deleted file mode 100644
index a9020d0a5e0..00000000000
--- a/lib/javascripts/locale/pl.js
+++ /dev/null
@@ -1,15 +0,0 @@
-MessageFormat.locale.pl = function (n) {
-  if (n == 1) {
-    return 'one';
-  }
-  if ((n % 10) >= 2 && (n % 10) <= 4 &&
-      ((n % 100) < 12 || (n % 100) > 14) && n == Math.floor(n)) {
-    return 'few';
-  }
-  if ((n % 10) === 0 || n != 1 && (n % 10) == 1 ||
-      ((n % 10) >= 5 && (n % 10) <= 9 || (n % 100) >= 12 && (n % 100) <= 14) &&
-      n == Math.floor(n)) {
-    return 'many';
-  }
-  return 'other';
-};