Revert "add TOTP/Recovery Form for mobile version"

This reverts commit a3811f944819430c278b6da6b08dc322a9b9ff65.

src/components/user_settings/mfa_backup_codes.js

@@ -0,0 +1,17 @@
+export default {
+  props: {
+    backupCodes: {
+      type: Object,
+      default: () => ({
+        inProgress: false,
+        codes: []
+      })
+    }
+  },
+  data: () => ({}),
+  computed: {
+    inProgress () { return this.backupCodes.inProgress },
+    ready () { return this.backupCodes.codes.length > 0 },
+    displayTitle () { return this.inProgress || this.ready }
+  }
+}