test: remove node-tap lookalike
This commit removes the small node-tap lookalike from several of the streams2 tests. It's only used by six tests, and is inconsistent with all other tests.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
commit message follows commit guidelines
Affected core subsystem(s)
test