remove refs

Author: TylerCarlson1

src/AutoMapper.Collection.EntityFramework.Tests/AutoMapper.Collection.EntityFramework.Tests.csproj

@@ -56,7 +56,6 @@
     <Reference Include="System" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Core" />
-    <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.ValueTuple, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
       <HintPath>..\..\packages\System.ValueTuple.4.3.0\lib\netstandard1.0\System.ValueTuple.dll</HintPath>
       <Private>True</Private>

src/AutoMapper.Collection.Tests/AutoMapper.Collection.Tests.csproj

@@ -47,7 +47,6 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
-    <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.ValueTuple, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
       <HintPath>..\..\packages\System.ValueTuple.4.3.0\lib\netstandard1.0\System.ValueTuple.dll</HintPath>
       <Private>True</Private>