test: remove obsolete domain test

test-microtask-queue-integration-domain.js tests that the behavior of
another test, test-microtask-queue-integration.js, is still
consistent when the core domain module is loaded.

This was needed because before the changes in #16222 were merged, the
core domain module would replace the function that would call nextTick
callbacks with a different implementation.

This is no longer the case, and therefore that test is no longer needed.

PR-URL: #23342
Reviewed-By: Vladimir de Turckheim <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
Reviewed-By: Sakthipriyan Vairamani <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: James M Snell <[email protected]>