[2.3.x] TST: remove leftover xfail in excel test_readers.py#60599

WillAyd merged 1 commit intopandas-dev:2.3.xpandas-dev/pandas:2.3.xfrom

jorisvandenbossche:test-reader-cleanupjorisvandenbossche/pandas:test-reader-cleanupCopy head branch name to clipboard