fixup! solutions/ad-rpi-t1lpse-sl: Add user guide

Author: aronkis

docs/solutions/reference-designs/ad-rpi-t1lpse-sl/index.rst

@@ -477,15 +477,6 @@ Hardware Registration
    videos, and more when you :adi:`register <AD-RPI-T1LPSE-SL?&v=RevC>` your
    hardware.
 
-Sample Application
-------------------
-
-.. toctree::
-   :maxdepth: 2
-   :glob:
-
-   */index
-
 Help and Support
 -------------------