Remove AppendMsBuildPropertyIfSet helpers

Author: chidozieononiwu

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator/src/StartUp/GeneratorHandler.cs

@@ -304,8 +304,6 @@ internal static string GetPackageDirectory(string rootDirectory, string package)
             process.StartInfo.ArgumentList.Add("Release");
             process.StartInfo.ArgumentList.Add($"-p:BaseOutputPath={binDirectory}");
             process.StartInfo.ArgumentList.Add($"-p:BaseIntermediateOutputPath={objDirectory}");
-            AppendMsBuildPropertyIfSet(process.StartInfo.ArgumentList, "RestoreConfigFile", "RestoreConfigFile");
-            AppendMsBuildPropertyIfSet(process.StartInfo.ArgumentList, "NuGetAudit", "NuGetAudit");
 
             process.Start();
             // Read both streams to avoid deadlocks. 'dotnet build' writes build/compiler
@@ -348,18 +346,6 @@ internal static (string StandardOutput, string StandardError) ReadProcessOutput(
             return (stdoutTask.Result, stderrTask.Result);
         }
 
-        private static void AppendMsBuildPropertyIfSet(
-            System.Collections.ObjectModel.Collection<string> argumentList,
-            string envVarName,
-            string propertyName)
-        {
-            var value = Environment.GetEnvironmentVariable(envVarName, EnvironmentVariableTarget.Process);
-            if (!string.IsNullOrWhiteSpace(value))
-            {
-                argumentList.Add($"-p:{propertyName}={value}");
-            }
-        }
-
         /// <summary>
         /// Creates a unique, process-isolated directory to hold a plugin build's 'bin' and 'obj'
         /// output. The directory is keyed on the process id and a GUID so that concurrent