test: remove next-tick-loops-quick

Scheduling of next ticks from within the next tick handler will result
in a tight execution loop where a timer cannot break into.

This test was invalid
test: pummel fs-watch-file-slow handle spurious

watch file will now generate an empty event when the file doesn't exist
initially
test: pummel/test-net-throttle adhere to streams

bufferSize is now a getter that shows all that has not been
acknowledged by the os, as well as in the buffer state. The test is
only looking to verify the js verified state.
test: move pummel/test-fs-largefile to disabled

This test is particularly pathological, and requires a ton of time to
run, we need to find a better way to manage it but in general this path
is fairly safe these days.