keyLF is as much of a key as keyCtrlD so removing the comment

Author: ldemailly

terminal.go

@@ -146,7 +146,7 @@ const (
 	keyCtrlD     = 4
 	keyCtrlU     = 21
 	keyEnter     = '\r'
-	keyLF        = '\n' // technically not a key (unless a user uses Ctrl+J), but needed for bracketed paste mode with `\n`s.
+	keyLF        = '\n'
 	keyEscape    = 27
 	keyBackspace = 127
 	keyUnknown   = 0xd800 /* UTF-16 surrogate area */ + iota