Remove unused template from docs (#1960)

Author: samfreund

docs/source/_templates/layout.html

@@ -47,9 +47,6 @@
 ogp_site_name = "PhotonVision Documentation"
 ogp_image = "https://raw.githubusercontent.com/PhotonVision/photonvision-docs/main/source/assets/RectLogo.png"
 
-# Add any paths that contain templates here, relative to this directory.
-templates_path = ["_templates"]
-
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This pattern also affects html_static_path and html_extra_path.