[FSSDK-11546] irrelevant test file removal

Author: junaed-optimizely

OptimizelySDK.Tests/OptimizelySDK.Tests.csproj

@@ -109,7 +109,6 @@
     <Compile Include="BucketerHoldoutTest.cs"/>
     <Compile Include="DecisionServiceHoldoutTest.cs"/>
     <Compile Include="OptimizelyUserContextHoldoutTest.cs"/>
-    <Compile Include="OptimizelyUserContextHoldoutReasonsTest.cs"/>
     <Compile Include="BucketerTest.cs"/>
     <Compile Include="ProjectConfigTest.cs"/>
     <Compile Include="TestSetup.cs"/>