[BUGFIX] Do not remove LocalConfiguration if executing unit tests

Unit test and code for #84623 relies on constants PATH_typo3conf and
then removes LocalConfiguration and some other config files if the
test is executed. Since that can't be mocked, the test is removed
to prevent that side effect.

Resolves: #86072
Related: #84623
Releases: master
Change-Id: I3cd9a913e2655e6fcd1209fcfd8365cbcbb4a9ef
Reviewed-on: https://review.typo3.org/58113


Reviewed-by: Richard Haeser <richard@maxserv.com>
Tested-by: Richard Haeser <richard@maxserv.com>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>