test: remove test-path-parse-6229.js from known issues

This test precedented the official documentation that states that
this is an expected behavior.

PR-URL: #26913
Refs: #6229
Refs: #12181
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Author: BridgeAR