In index.php AND typo3/sysext/cms/tslib/index_ts.php
(which will be included in index.php) the constant
PATH_site is defined.

The definition in typo3/sysext/cms/tslib/index_ts.php
is obsolete, because this will be checked via if(!defined(...)).

See also #35003

Change-Id: Ia0a967f562a2a58655b9db0419654c36e7092a05
Fixes: #35017
Releases: 6.0, 4.7
Reviewed-on: http://review.typo3.org/9753
Reviewed-by: Andy Grunwald
Tested-by: Andy Grunwald
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn