Stop Dual-Targetting to avoid Flakiness

Author: iwillspeak

examples/HelloWorld/HelloWorld.scmproj

@@ -4,7 +4,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <PackAsTool>True</PackAsTool>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFrameworks>netcoreapp3.1;net5.0</TargetFrameworks>
   </PropertyGroup>
 
   <!-- Default compile items. We don't to just glob default compile items because ordering matters. -->

src/Feersum.Core/Feersum.Core.scmproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net5.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <UpdateAssemblyInfo>false</UpdateAssemblyInfo>
     <GenerateGitVersionInformation>false</GenerateGitVersionInformation>
   </PropertyGroup>

src/Serehfa/Equivalence.cs

@@ -96,11 +96,7 @@ public override int GetHashCode(object o)
                 return o switch
                 {
                     ConsPair p =>
-#if NETSTANDARD2_0
                      (p.Car, p.Cdr).GetHashCode(),
-#else
-                     HashCode.Combine(p.Car, p.Cdr),
-#endif
                     object[] v => ArrayHash(v),
                     bool[] bv => ArrayHash(bv),
                     _ => EqualityComparer<object>.Default.GetHashCode(o),

src/Serehfa/Serehfa.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net5.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <LangVersion>Latest</LangVersion>
     <Title>The Feersum Scheme core types library</Title>
     <Description>