remove warning, because the driver system was fixed after all

Author: digitalillusions

docs/frame.rst

@@ -1,9 +1,6 @@
 Frame control
 =============
 
-.. warning::
-	The frame control system is currently under construction. It seems that blender has an internal issue when evaluating user specified Driver expressions when ``Lock Interface`` is enabled. However, this is required for our addon. We will enable this feature again once the issue has been resolved. You can track the progress `here <https://developer.blender.org/T102807>`_. Until then, you can make use of the **Custom Script** functionality to achieve the same goal.
-
 You can use Blenders `driver system <https://docs.blender.org/manual/en/latest/animation/drivers/index.html>`_ to control the frame of the sequence.
 
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