chore: fix npm build warning about moment locales

WARNING in ./node_modules/moment/min/moment-with-locales.js 2159:16-50
Module not found: Error: Can't resolve './locale' in '/home/richard/src/nextcloud/master/dev_apps/calendar/node_modules/moment/min'
 @ ./node_modules/@nextcloud/moment/dist/index.mjs 1:0-50 2:0-65 6:0-8 9:58-72 9:73-81 15:0-17:2

Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>

Author: st3iny

webpack.config.js

@@ -45,10 +45,6 @@ webpackRules.RULE_SCSS.use = [
 ]
 
 webpackConfig.plugins.push(
-	new webpack.IgnorePlugin({
-		resourceRegExp: /^\.\/locale$/,
-		contextRegExp: /moment$/,
-	}),
 	new webpack.ProvidePlugin({
 		// Shim ICAL to prevent using the global object (window.ICAL).
 		// The library ical.js heavily depends on instanceof checks which will