Remove the leftover file content layer and align the docs

Elternbeirat.Web/Elternbeirat.Web.csproj

@@ -19,7 +19,6 @@
 
     <ItemGroup>
         <PackageReference Include="Markdig" />
-        <PackageReference Include="YamlDotNet" />
     </ItemGroup>
 
     <!-- The typed PocketBaseClient the app reads its content from. Referencing
@@ -28,10 +27,4 @@
         <ProjectReference Include="..\Elternbeirat.PocketBase\Elternbeirat.PocketBase.csproj" />
     </ItemGroup>
 
-    <!-- Content ships as files inside the image, not in a volume. Copy it to
-         the output directory so the container can find it. -->
-    <ItemGroup>
-        <Content Include="Content\**\*" CopyToOutputDirectory="PreserveNewest" />
-    </ItemGroup>
-
 </Project>