Remove explicit references to NHibernate

+semver:patch

Author: hazzik

src/Directory.Build.props

@@ -38,10 +38,6 @@
     <DebugType>portable</DebugType>
   </PropertyGroup>
 
-  <PropertyGroup Label="Package Versions">
-    <NHibernatePackageVersion>5.3.3</NHibernatePackageVersion>
-  </PropertyGroup>
-  
   <ItemGroup Condition="'$(IsPackable)' == 'true'">
     <None Include="$(MSBuildThisFileDirectory)../docs/logo-nuget.png" Pack="true" PackagePath="/"/>
   </ItemGroup>

src/Examples.FirstAutomappedProject/Examples.FirstAutomappedProject.csproj

@@ -13,7 +13,6 @@
   </ItemGroup>
 
   <ItemGroup>    
-    <PackageReference Include="NHibernate" Version="$(NHibernatePackageVersion)" />    
     <PackageReference Include="System.Data.SQLite.Core" Version="1.0.106.0" />
   </ItemGroup>
 

src/Examples.FirstProject/Examples.FirstProject.csproj

@@ -13,7 +13,6 @@
   </ItemGroup>
 
   <ItemGroup>    
-    <PackageReference Include="NHibernate" Version="$(NHibernatePackageVersion)" />
     <PackageReference Include="System.Data.SQLite.Core" Version="1.0.106.0" />
   </ItemGroup>
 

src/FluentNHibernate/FluentNHibernate.csproj

@@ -16,7 +16,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="NHibernate" Version="$(NHibernatePackageVersion)" />
+    <PackageReference Include="NHibernate" Version="5.3.3" />
   </ItemGroup>
 
   <ItemGroup>