Revert "Merge branch 'external-events' into 'main'"

This reverts merge request !1223

js/src/components/Event/ExternalParticipationButton.vue

@@ -1,27 +0,0 @@
-<template>
-  <div class="participation-button">
-    <a
-      class="button is-large is-primary"
-      type="button"
-      target="_blank"
-      :href="
-        event.externalParticipationUrl
-          ? encodeURI(`${event.externalParticipationUrl}?uuid=${event.uuid}`)
-          : '#'
-      "
-      :disabled="!event.externalParticipationUrl"
-      >{{ $t("Go to booking") }}&nbsp;
-      <b-icon style="margin-left: 0" icon="open-in-new"
-    /></a>
-  </div>
-</template>
-
-<script lang="ts">
-import { Component, Prop, Vue } from "vue-property-decorator";
-import { IEvent } from "../../types/event.model";
-
-@Component
-export default class ExternalParticipationButton extends Vue {
-  @Prop({ required: true }) event!: IEvent;
-}
-</script>