Remove reference to profiler lifetime property that was remove in 3.x

Author: James Halsall

reference/configuration/framework.rst

@@ -44,7 +44,6 @@ Configuration
     * `dsn`_
     * `username`_
     * `password`_
-    * `lifetime`_
     * `matcher`_
         * `ip`_
         * :ref:`path <reference-profiler-matcher-path>`
@@ -570,14 +569,6 @@ password
 
 When needed, the password for the profiling storage.
 
-lifetime
-........
-
-**type**: ``integer`` **default**: ``86400``
-
-The lifetime of the profiling storage in seconds. The data will be deleted
-when the lifetime is expired.
-
 matcher
 .......