Socket.Io/4/Removing Useless Broadcast Flag

This codemod will get rid of following error:

cannot get emit of undefined

Example

Before:

socket.to("room1").broadcast.emit(/* ... */);

was working in Socket.IO v3 but is now considered invalid, as the broadcast flag is useless because the to("room1") method already puts the Socket instance in broadcasting mode.

After:

socket.to("room1").emit(/* ... */);