querystring: remove `name` from `stringify()`

QueryString.stringify() allowed a fourth argument that was used as a
conditional in the return value, but was undocumented, not used by core
and always was always false/undefiend. So the argument and conditional
have been removed.

Signed-off-by: Trevor Norris <trev.norris@gmail.com>
timers: setImmediate v8 optimization fix

Prevent v8 disabling optimization for scenario "bad value context for
arguments value".

Solves #6631

Signed-off-by: Trevor Norris <trev.norris@gmail.com>