Chore: Remove TimeSync usage (#26294)

apps/meteor/.eslintignore

apps/meteor/.meteor/packages

apps/meteor/.meteor/versions

apps/meteor/app/e2e/client/rocketchat.e2e.room.js

apps/meteor/app/lib/client/methods/sendMessage.js

apps/meteor/app/otr/client/rocketchat.otr.room.js

apps/meteor/client/methods/updateMessage.ts

apps/meteor/client/startup/startup.ts

apps/meteor/definition/externals/meteor/mizzao-timesync.d.ts

apps/meteor/packages/meteor-timesync/.gitignore

apps/meteor/packages/meteor-timesync/.travis.yml

apps/meteor/packages/meteor-timesync/History.md

apps/meteor/packages/meteor-timesync/LICENSE

apps/meteor/packages/meteor-timesync/README.md

apps/meteor/packages/meteor-timesync/client/index.js

...meteor/packages/meteor-timesync/client/timesync-client.js

apps/meteor/packages/meteor-timesync/package.js

apps/meteor/packages/meteor-timesync/server/index.js

...meteor/packages/meteor-timesync/server/timesync-server.js

apps/meteor/packages/meteor-timesync/tests/client.js