Update docs

Author: ekouts

docs/config_reference.rst

@@ -1143,16 +1143,6 @@ You may define different logger objects per system but *not* per partition.
    Emit a separate log record for each performance variable.
    Set this option to :obj:`True` if you want to keep compatibility with the performance logging prior to ReFrame 4.0.
 
-.. py:attribute:: logging.log_sanity_results
-
-   :required: No
-   :default: ``false``
-
-   Emit log records of sanity-only tests in the performance handlers.
-   It is useful when you want to send data to the `httpjson <#the-httpjson-log-handler>`__ or other performance logging backends.
-
-   .. versionadded:: 4.9
-
 .. py:attribute:: logging.target_systems
 
    :required: No

docs/tutorial.rst

@@ -2072,6 +2072,10 @@ Let's walk briefly through the most important parts of its configuration:
 
 Let's rerun our STREAM example using the new configuration:
 
+.. note::
+
+   After Reframe 4.9 ReFrame will add entries in the perflogs for all tests, not only performance tests.
+
 .. code-block:: bash
    :caption: Run with the Docker compose setup.