Revert "Fix PHP 8.3 "Usage of ldap_connect with two arguments is deprecated" exception"

Summary:
Revert commit 700090917af6dd2e27c9fd82269797b6ec5def59 per T15963.

Fixes T15963
Opens T15724

Test Plan: N/A.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Maniphest Tasks: T15963, T15724

Differential Revision: https://we.phorge.it/D25842