Remove redundant PackageReference to FluentValidation 11.11.0.

Author: kolan72

src/ExpressValidator/ExpressValidator.csproj

@@ -33,10 +33,6 @@
     <None Remove="docs\ExpressValidator\**" />
   </ItemGroup>
 
-  <ItemGroup>
-    <PackageReference Include="FluentValidation" Version="11.11.0" />
-  </ItemGroup>
-
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <NoWarn>1701;1702;1591</NoWarn>
   </PropertyGroup>