Remove extra global.json, AppInsights test to net8.0 (#3219)

* Remove extra global.json, AppInsights test to net8.0

* Fix install-dotnet.yml update

Author: jviau

build/install-dotnet.yml

@@ -1,19 +1,15 @@
 steps:
 
-- task: UseDotNet@2 # Needed by our projects and CI steps
-  displayName: Install .NET 6
+# Our tests target net8.0
+- task: UseDotNet@2
+  displayName: 'Install .NET8 SDK'
   inputs:
-    packageType: sdk
-    version: 6.x
+    packageType: 'sdk'
+    version: "8.x"
 
-- task: UseDotNet@2 # Needed by our projects and CI steps
-  displayName: Install .NET 7
+# The SDK we use to build
+- task: UseDotNet@2
+  displayName: 'Install current .NET SDK'
   inputs:
-    packageType: sdk
-    version: 7.x
-
-- task: UseDotNet@2 # The pinned SDK we use to build
-  displayName: Install .NET SDK from global.json
-  inputs:
-    packageType: sdk
+    packageType: 'sdk'
     useGlobalJson: true

eng/ci/templates/steps/install-dotnet.yml

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <IsPackable>false</IsPackable>
     <AssemblyName>Microsoft.Azure.Functions.Worker.ApplicationInsights.Tests</AssemblyName>
     <RootNamespace>Microsoft.Azure.Functions.Worker.ApplicationInsights.Tests</RootNamespace>
@@ -20,10 +20,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
     <PackageReference Include="Moq" Version="4.16.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
   </ItemGroup>
 
 </Project>