remove the old file.

Author: gpx1000

README.adoc

@@ -70,7 +70,6 @@ The Vulkan Guide can be built as a single page using `asciidoctor guide.adoc`
 
 == xref:{chapters}loader.adoc[Loader]
 
-
 == xref:{chapters}layers.adoc[Layers]
 
 == xref:{chapters}querying_extensions_features.adoc[Querying Properties, Extensions, Features, Limits, and Formats]

antora/modules/ROOT/nav.adoc

@@ -10,7 +10,6 @@
 ** xref:{chapters}vulkan_spec.adoc[]
 ** xref:{chapters}platforms.adoc[]
 ** xref:{chapters}checking_for_support.adoc[]
-** xref:{chapters}feature_availability_dashboard.adoc[]
 ** xref:{chapters}versions.adoc[]
 ** xref:{chapters}vulkan_profiles.adoc[]
 ** xref:{chapters}vulkan_release_summary.adoc[]