Revert baseline changes for net6/7/8 frameworks - those use external template packages

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

Author: Copilot

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-False#FileScopedNs-False#Framework-net6.0#cs.verified/MyProject/Program.cs

@@ -1,3 +1,4 @@
-using System;
+// See https://aka.ms/new-console-template for more information
+using System;
 
 Console.WriteLine("Hello, World!");

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-False#FileScopedNs-False#Framework-net7.0#cs.verified/MyProject/Program.cs

@@ -1,3 +1,4 @@
-using System;
+// See https://aka.ms/new-console-template for more information
+using System;
 
 Console.WriteLine("Hello, World!");

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-False#FileScopedNs-False#Framework-net8.0#cs.verified/MyProject/Program.cs

@@ -1,3 +1,4 @@
-using System;
+// See https://aka.ms/new-console-template for more information
+using System;
 
 Console.WriteLine("Hello, World!");

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-True#FileScopedNs-True#Framework-net6.0#cs#NoLangVer.verified/MyProject/Program.cs

@@ -1 +1,2 @@
-Console.WriteLine("Hello, World!");
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-True#FileScopedNs-True#Framework-net6.0#cs.verified/MyProject/Program.cs

@@ -1 +1,2 @@
-Console.WriteLine("Hello, World!");
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-True#FileScopedNs-True#Framework-net7.0#cs#NoLangVer.verified/MyProject/Program.cs

@@ -1 +1,2 @@
-Console.WriteLine("Hello, World!");
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-True#FileScopedNs-True#Framework-net7.0#cs.verified/MyProject/Program.cs

@@ -1 +1,2 @@
-Console.WriteLine("Hello, World!");
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-True#FileScopedNs-True#Framework-net8.0#cs#NoLangVer.verified/MyProject/Program.cs

@@ -1 +1,2 @@
-Console.WriteLine("Hello, World!");
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

test/dotnet-new.IntegrationTests/Approvals/FeaturesSupport.console.Nullable-True#TopLevel-True#ImplicitUsings-True#FileScopedNs-True#Framework-net8.0#cs.verified/MyProject/Program.cs

@@ -1 +1,2 @@
-Console.WriteLine("Hello, World!");
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");