test: remove unnecessary urlToHttpOptions test
The following test is not needed anymore. We removed the symbol in URL, and the following test is unnecessary. Reference: https://github.com/nodejs/node/pull/46904
We don't even check for isURL on urlToHttpOptions, but the parameter of urlToHttpOptions is expected to be URL
.
Referencing the discussion with @aduh95 on https://github.com/nodejs/node/pull/46989
cc @nodejs/url