Reverted back to only targeting net461

Author: johelvisguzman

test/DotNetToolkit.Repository.Integration.Test/DotNetToolkit.Repository.Integration.Test.csproj

@@ -3,7 +3,12 @@
   <Import Project="..\..\build\common.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>net461;netcoreapp3.1</TargetFrameworks>
+    <!--
+    This failing in appveyor due to SqlServerCompact not being compatible with Visual Studio 2019...
+    From now on, if netcoreapp3.1 needs to be tested, it will need to be added back manually, until another solution is found
+    -->
+    <!--<TargetFrameworks>net461;netcoreapp3.1</TargetFrameworks>-->
+    <TargetFramework>net461</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>

test/DotNetToolkit.Repository.Test/DotNetToolkit.Repository.Test.csproj

@@ -3,7 +3,12 @@
   <Import Project="..\..\build\common.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>net461;netcoreapp3.1</TargetFrameworks>
+    <!--
+    This failing in appveyor due to SqlServerCompact not being compatible with Visual Studio 2019...
+    From now on, if netcoreapp3.1 needs to be tested, it will need to be added back manually, until another solution is found
+    -->
+    <!--<TargetFrameworks>net461;netcoreapp3.1</TargetFrameworks>-->
+    <TargetFramework>net461</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>