update(measure): 优化 gitignore

.gitignore

@@ -45,3 +45,6 @@ app.*.map.json
 /android/app/profile
 /android/app/release
 web/index.html
+
+# Windows related
+windows/flutter/generated_plugin_registrant.h

windows/flutter/generated_plugin_registrant.h

@@ -1,15 +0,0 @@
-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#ifndef GENERATED_PLUGIN_REGISTRANT_
-#define GENERATED_PLUGIN_REGISTRANT_
-
-#include <flutter/plugin_registry.h>
-
-// Registers Flutter plugins.
-void RegisterPlugins(flutter::PluginRegistry* registry);
-
-#endif  // GENERATED_PLUGIN_REGISTRANT_