[fix-finder] Remove unused `using` directives in ELFHelper.cs and TypeMappingStep.cs

[github-actions]

Problem

Several source files contain using directives for namespaces that are never referenced, adding unnecessary noise and potentially slowing down IDE analysis.

Location

• File: src/Xamarin.Android.Build.Tasks/Utilities/ELFHelper.cs

  • using System.Collections.Concurrent; (line 3) — no Concurrent* types are used
  • using System.Text; (line 4) — no StringBuilder or Encoding usage

• File: src/Microsoft.Android.Sdk.ILLink/TypeMappingStep.cs

  • using System.Runtime.Loader; (line 6) — no AssemblyLoadContext usage; assembly loading uses System.Reflection.Assembly.LoadFile
  • using System.Text; (line 7) — no StringBuilder or Encoding usage

Suggested Fix

Remove the four unused using directives listed above.

Guidelines

• Keep all other using directives intact
• Follow existing formatting (no blank-line changes)
• Verify the project still builds after removal

Acceptance Criteria

• The four unused using directives are removed
• Both projects build successfully
• No new warnings introduced

Generated by Nightly Fix Finder · ● 8.7M · ◷

• expires on Jun 3, 2026, 2:31 AM UTC