Remove unneeded timers from some tests and move others from parallel
testing to sequential testing.
This is to resolve test failures on freebsd10-64 on CI. The failures
are all due to timers firing later than expected. Timers firing later
than they are set for can happen on resource-constrained hosts and is
not a bug.
In general, it may be wise to put tests that depend on timing into
sequential testing rather than parallel testing, as the timing can
be affected by other simultaneously-running test processes.
Fixes: https://github.com/nodejs/node/issues/8041
Fixes: https://github.com/nodejs/node/issues/9227
PR-URL: https://github.com/nodejs/node/pull/9317
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Julien Gilli <jgilli@nodejs.org>
Reviewed-By: Johan Bergstrom <bugs@bergstroem.nu>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Rich Trott