Disable /srv/mediawiki-staging/php symlink management
exp/files/php/scap.cfg:
Set manage_mediawiki_php_symlink: False to match production
as of https://gerrit.wikimedia.org/r/c/operations/puppet/+/1020321
exp/files/deploy/scripts/scap-prep-mw-branches:
Remove code which initalized the php symlink
Bug: T359643