Flutter clean Flutter.podspec (#72306)

packages/flutter_tools/lib/src/commands/clean.dart

diff --git a/packages/flutter_tools/lib/src/commands/clean.dart b/packages/flutter_tools/lib/src/commands/clean.dart
index 6a4cc92..bceac1d 100644
--- a/packages/flutter_tools/lib/src/commands/clean.dart
+++ b/packages/flutter_tools/lib/src/commands/clean.dart
@@ -52,6 +52,7 @@
     deleteFile(flutterProject.ios.generatedEnvironmentVariableExportScript);
     deleteFile(flutterProject.ios.deprecatedCompiledDartFramework);
     deleteFile(flutterProject.ios.deprecatedProjectFlutterFramework);
+    deleteFile(flutterProject.ios.flutterPodspec);
 
     deleteFile(flutterProject.linux.ephemeralDirectory);
     deleteFile(flutterProject.macos.ephemeralDirectory);

packages/flutter_tools/lib/src/project.dart

diff --git a/packages/flutter_tools/lib/src/project.dart b/packages/flutter_tools/lib/src/project.dart
index 064c10b..8c22cff 100644
--- a/packages/flutter_tools/lib/src/project.dart
+++ b/packages/flutter_tools/lib/src/project.dart
@@ -692,6 +692,11 @@
       .childDirectory('Flutter')
       .childDirectory('Flutter.framework');
 
+  /// Used only for "flutter clean" to remove old references.
+  File get flutterPodspec => _flutterLibRoot
+      .childDirectory('Flutter')
+      .childFile('Flutter.podspec');
+
   Directory get pluginRegistrantHost {
     return isModule
         ? _flutterLibRoot