bug #8709 Removed a deprecated feature in a testing article (javiereguiluz)

This PR was merged into the 3.3 branch.

Discussion
----------

Removed a deprecated feature in a testing article

Spotted while working on #8705.

This is no longer needed because all profiler storage engines were removed: https://symfony.com/doc/current/profiler/storage.html

Commits
-------

eb30e13 Removed a deprecated feature in a testing article

Author: weaverryan

testing/profiling.rst

@@ -59,12 +59,6 @@ finish. It's easy to achieve if you embed the token in the error message::
         )
     );
 
-.. caution::
-
-     The profiler store can be different depending on the environment
-     (especially if you use the SQLite store, which is the default configured
-     one).
-
 .. note::
 
     The profiler information is available even if you insulate the client or