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Guys, I suspect - and I may be wrong here - that he has probably already considered the possibility of laying the phone face down or not charging it near him or physically covering up the LED.
This is a smartphone. It's a mini computer. Why shouldn't we look for better and more automated ways to do things?
To the OP: You can use Tasker for this. If you set up a task for either a time period or an event (e.g. the phone being set to silent mode), and then under Audio > Notification Pulse, you can turn it to "Off." There are lots of people here using Tasker profiles, so if you have trouble setting it up, post a thread and someone can help you.