test: remove common.skipIfReportDisabled()

The report feature won't ever be disabled moving forward, so
checking for its existence in the tests is no longer needed.

PR-URL: https://github.com/nodejs/node/pull/32242
Fixes: https://github.com/nodejs/node/issues/26293


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>