repl: don't use tty control codes when $TERM is set to "dumb"
This stops the REPL from using ANSI control codes on terminals which don't support them. (Fixes nodejs/node-v0.x-archive#5344)
For history see nodejs/node-v0.x-archive#25506
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This stops the REPL from using ANSI control codes on terminals which don't support them. (Fixes nodejs/node-v0.x-archive#5344)
For history see nodejs/node-v0.x-archive#25506