chore: Translate transifex_input.json in es_419

98% of minimum 30% reviewed source file: 'transifex_input.json'
on 'es_419'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

translations/frontend-app-course-authoring/src/i18n/messages/es_419.json

@@ -1218,8 +1218,6 @@
   "course-authoring.video-uploads.transcriptSettings.orderTranscripts.cielo24.credential.message": "Ingrese la información de la cuenta para su organización.",
   "course-authoring.video-uploads.transcriptSettings.orderTranscripts.cielo24.apiKey.label": "Clave API",
   "course-authoring.video-uploads.transcriptSettings.orderTranscripts.cielo24.username.label": "Nombre de usuario",
-  "course-authoring.generic.paste-component.popover.content.text": "De:",
-  "course-authoring.generic.paste-component.paste-button.whats-in-clipboard.text": "¿Qué hay en mi portapapeles?",
   "authoring.discussions.configurationChangeConsequences": "Los estudiantes podrán perder el acceso a cualquier discusión activa o publicaciones previas de tu curso. ",
   "authoring.discussions.ok": "OK",
   "authoring.discussions.cancel": "Cancelar",