undo local hacks

src/ImageSharp/ImageSharp.csproj

@@ -10,8 +10,7 @@
     <VersionPrefix Condition="$(packageversion) != ''">$(packageversion)</VersionPrefix>
     <VersionPrefix Condition="$(packageversion) == ''">0.0.1</VersionPrefix>
 
-<!--    <TargetFrameworks>netcoreapp3.1;netcoreapp2.1;netstandard2.1;netstandard2.0;netstandard1.3;net472</TargetFrameworks>-->
+    <TargetFrameworks>netcoreapp3.1;netcoreapp2.1;netstandard2.1;netstandard2.0;netstandard1.3;net472</TargetFrameworks>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
 
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>

tests/ImageSharp.Tests/ImageSharp.Tests.csproj

@@ -2,8 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-<!--    <TargetFrameworks>netcoreapp3.1;netcoreapp2.1;net472</TargetFrameworks>-->
+    <TargetFrameworks>netcoreapp3.1;netcoreapp2.1;net472</TargetFrameworks>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
     <DebugSymbols>True</DebugSymbols>
     <AssemblyName>SixLabors.ImageSharp.Tests</AssemblyName>