drop AvatarOperations and use UserProfileDialog in Chat view

src/components/messages/AvatarOperations.vue

@@ -1,37 +0,0 @@
-<template>
-  <div
-    :class="{
-      'avatar-operations': true,
-      incoming: incoming,
-      outgoing: !incoming,
-    }"
-  >
-    <v-btn id="btn-private-chat" v-if="incoming" text @click.stop="startPrivateChat" class="ma-0 pa-0"
-      >{{ $t("menu.start_private_chat") }}</v-btn
-    >
-  </div>
-</template>
-
-<script>
-import messageMixin from "./messageMixin";
-
-export default {
-  mixins: [messageMixin],
-  mounted() {
-      // Any items to show?
-      if (this.room && this.event && this.$matrix.isDirectRoomWith(this.room, this.event.getSender())) {
-        this.$emit("close");
-      }
-  },
-  methods: {
-    startPrivateChat() {
-      this.$emit("close");
-      this.$emit("start-private-chat", { event: this.event });
-    },
-  },
-};
-</script>
-
-<style lang="scss">
-@import "@/assets/css/chat.scss";
-</style>