Drop unused import

diff --git a/src/lib/units/month.js b/src/lib/units/month.js
index f153f50b3a6c9aa9973200640f08584ae009fcee..5f590b04a3d0411617b1e751ff58af571547d6aa 100644 (file)
--- a/src/lib/units/month.js
+++ b/src/lib/units/month.js
@@ -12,7 +12,6 @@ import isArray from '../utils/is-array';
 import indexOf from '../utils/index-of';
 import { createUTC } from '../create/utc';
 import getParsingFlags from '../create/parsing-flags';
-import isUndefined from '../utils/is-undefined';
 
 export function daysInMonth(year, month) {
     return new Date(Date.UTC(year, month + 1, 0)).getUTCDate();