test(auth): keep scope benchmark local

Remove the temporary performance benchmark from the committed test suite while retaining its measurements in the pull request description.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: SamMorrowDrums

pkg/http/middleware/scope_challenge_test.go

@@ -366,58 +366,3 @@ func scopeChallengeContextWithScopes(ctx context.Context, activeScopes []string)
 	ctx = ghcontext.WithTokenScopes(ctx, activeScopes)
 	return ctx
 }
-
-func BenchmarkWithScopeChallengeDynamicPolicy(b *testing.B) {
-	scopes.SetGlobalToolScopeMap(scopes.ToolScopeMap{
-		"write_file": scopes.DynamicChallenge(
-			[]scopes.Scope{scopes.Repo, scopes.Workflow},
-			func([]string) bool { return true },
-			func(arguments map[string]any, activeScopes []string) []string {
-				if path, _ := arguments["path"].(string); strings.HasPrefix(path, ".github/workflows/") {
-					return scopes.ChallengeAll(activeScopes, scopes.Repo, scopes.Workflow)
-				}
-				return scopes.ChallengeAll(activeScopes, scopes.Repo)
-			},
-		),
-	})
-	b.Cleanup(func() { scopes.SetGlobalToolScopeMap(nil) })
-
-	for _, payload := range []struct {
-		name string
-		size int
-	}{
-		{name: "small_arguments", size: 256},
-		{name: "large_arguments", size: 32 * 1024},
-	} {
-		body := `{"jsonrpc":"2.0","method":"tools/call","params":{"name":"write_file","arguments":{"path":"README.md","nested":[{"payload":"` +
-			strings.Repeat("x", payload.size) + `"},[1,2,3]]}}}`
-		next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			var downstreamRequest mcpJSONRPCRequest
-			_ = json.NewDecoder(r.Body).Decode(&downstreamRequest)
-			var arguments map[string]any
-			_ = json.Unmarshal(downstreamRequest.Params.Arguments, &arguments)
-			w.WriteHeader(http.StatusNoContent)
-		})
-		handler := WithMCPParse()(WithScopeChallenge(&oauth.Config{}, &mockScopeFetcher{})(next))
-
-		b.Run(payload.name, func(b *testing.B) {
-			for _, benchmark := range []struct {
-				name         string
-				activeScopes []string
-			}{
-				{name: "maximum_scopes_fast_path", activeScopes: []string{"repo", "workflow"}},
-				{name: "call_specific_decode", activeScopes: []string{"repo"}},
-			} {
-				b.Run(benchmark.name, func(b *testing.B) {
-					b.ReportAllocs()
-					b.SetBytes(int64(len(body)))
-					for b.Loop() {
-						request := httptest.NewRequest(http.MethodPost, "/mcp", strings.NewReader(body))
-						request = request.WithContext(scopeChallengeContextWithScopes(request.Context(), benchmark.activeScopes))
-						handler.ServeHTTP(httptest.NewRecorder(), request)
-					}
-				})
-			}
-		})
-	}
-}