Improve removal of other languages than fr-FR and en-US

client/src/locale/angular.ar-001.xlf

client/src/locale/angular.ca-ES.xlf

client/src/locale/angular.cs-CZ.xlf

client/src/locale/angular.da-DK.xlf

client/src/locale/angular.de-DE.xlf

client/src/locale/angular.el-GR.xlf

client/src/locale/angular.en-GB.xlf

client/src/locale/angular.eo.xlf

client/src/locale/angular.es-ES.xlf

client/src/locale/angular.eu-ES.xlf

client/src/locale/angular.fa-IR.xlf

client/src/locale/angular.fi-FI.xlf

client/src/locale/angular.gd.xlf

client/src/locale/angular.gl-ES.xlf

client/src/locale/angular.hu-HU.xlf

client/src/locale/angular.it-IT.xlf

client/src/locale/angular.ja-JP.xlf

client/src/locale/angular.jbo.xlf

client/src/locale/angular.ko-KR.xlf

client/src/locale/angular.lt-LT.xlf