remove now uneeded showUpdates mixin

src/components/AddShowModal.vue

@@ -86,11 +86,10 @@
 
 <script>
 import slugify from '../mixins/slugify.js'
-import showUpdates from '../mixins/showUpdates.js'
 import { mapGetters } from 'vuex'
 
 export default {
-  mixins: [ slugify, showUpdates ],
+  mixins: [ slugify ],
   data () {
     return {
       newShow: {

src/mixins/showUpdates.js

-export default {
-  methods: {
-    /* returns a new minimal object from the current show object with all
-    properties needed for a PUT request to the /show/ endpoint */
-    getUpdateShowObject () {
-      let s = {}
-      s.name = this.show.name
-      s.slug = this.show.slug
-      s.short_description = this.show.short_description
-      s.fundingcategory = this.show.fundingcategory
-      s.type = this.show.type
-      // we do not want the arrays do be passed as references, because the
-      // current show object should not get modified when the update object
-      // gets modified, therefore we use slice to clone the arrays
-      s.category = this.show.category.slice()
-      s.hosts = this.show.hosts.slice()
-      s.owners = this.show.owners.slice()
-      s.language = this.show.language.slice()
-      s.topic = this.show.topic.slice()
-      s.musicfocus = this.show.musicfocus.slice()
-      return s
-    },
-  }
-}