Revert "Experimental flags for hot reloads, fixed" (#27059)

* Revert "Make UriMapper and StdoutHandler public and add test cases (#26932)"

This reverts commit 6cf554b0c414097ce473a6f37bb1a4d5104df3c0.

* Revert "Update packages (#27046)"

This reverts commit 496c57386bb2e51d0153358d6c29ebd6a5a25ecd.

* Revert "roll engine for TODAY bug (#27049)"

This reverts commit 5ae6346f1d46af0f7cc30e9fcbd985e3242c9c76.

* Revert "Warn when building on master channel (#25007)"

This reverts commit dd65a54628159af18c0ab04d4868456526fa91e5.

* Revert "Add experimentalBuildEnabled flag and initial shim for build_runner (#26989)"

This reverts commit 1237ee8f63995e1bdddd651e6d28daf6ab145f3d.

* Revert "Experimental flags for hot reloads, fixed (#27043)"

This reverts commit 2c05d08f0ca1301616220b656dce70839419493c.

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

diff --git a/packages/flutter_tools/lib/src/commands/run.dart b/packages/flutter_tools/lib/src/commands/run.dart
index 679120f..16b764e 100644
--- a/packages/flutter_tools/lib/src/commands/run.dart
+++ b/packages/flutter_tools/lib/src/commands/run.dart
@@ -333,11 +333,6 @@
       throwToolExit('Error: --train is only allowed when running as --dynamic --profile '
           '(recommended) or --debug (may include unwanted debug symbols).');
 
-    List<String> expFlags;
-    if (argParser.options.containsKey(FlutterOptions.kEnableExperiment) &&
-        argResults[FlutterOptions.kEnableExperiment] != null) {
-      expFlags = argResults[FlutterOptions.kEnableExperiment];
-    }
     final List<FlutterDevice> flutterDevices = devices.map<FlutterDevice>((Device device) {
       return FlutterDevice(
         device,
@@ -346,7 +341,6 @@
         fileSystemRoots: argResults['filesystem-root'],
         fileSystemScheme: argResults['filesystem-scheme'],
         viewFilter: argResults['isolate-filter'],
-        experimentalFlags: expFlags,
       );
     }).toList();
 

packages/flutter_tools/lib/src/compile.dart

diff --git a/packages/flutter_tools/lib/src/compile.dart b/packages/flutter_tools/lib/src/compile.dart
index b08f028..8439c98 100644
--- a/packages/flutter_tools/lib/src/compile.dart
+++ b/packages/flutter_tools/lib/src/compile.dart
@@ -331,8 +331,7 @@
     CompilerMessageConsumer compilerMessageConsumer = printError,
     String initializeFromDill,
     TargetModel targetModel = TargetModel.flutter,
-    bool unsafePackageSerialization,
-    List<String> experimentalFlags,
+    bool unsafePackageSerialization
   }) : assert(_sdkRoot != null),
        _trackWidgetCreation = trackWidgetCreation,
        _packagesPath = packagesPath,
@@ -342,8 +341,7 @@
        _stdoutHandler = StdoutHandler(consumer: compilerMessageConsumer),
        _controller = StreamController<_CompilationRequest>(),
        _initializeFromDill = initializeFromDill,
-       _unsafePackageSerialization = unsafePackageSerialization,
-       _experimentalFlags = experimentalFlags {
+       _unsafePackageSerialization = unsafePackageSerialization {
     // This is a URI, not a file path, so the forward slash is correct even on Windows.
     if (!_sdkRoot.endsWith('/'))
       _sdkRoot = '$_sdkRoot/';
@@ -359,7 +357,6 @@
   final StdoutHandler _stdoutHandler;
   String _initializeFromDill;
   bool _unsafePackageSerialization;
-  final List<String> _experimentalFlags;
 
   final StreamController<_CompilationRequest> _controller;
 
@@ -472,10 +469,6 @@
     if (_unsafePackageSerialization == true) {
       command.add('--unsafe-package-serialization');
     }
-    if (_experimentalFlags != null) {
-      final String expFlags = _experimentalFlags.join(',');
-      command.add('--enable-experiment=$expFlags');
-    }
     printTrace(command.join(' '));
     _server = await processManager.start(command);
     _server.stdout

packages/flutter_tools/lib/src/resident_runner.dart

diff --git a/packages/flutter_tools/lib/src/resident_runner.dart b/packages/flutter_tools/lib/src/resident_runner.dart
index 75e8b9c..eecb057 100644
--- a/packages/flutter_tools/lib/src/resident_runner.dart
+++ b/packages/flutter_tools/lib/src/resident_runner.dart
@@ -35,7 +35,6 @@
     this.fileSystemScheme,
     this.viewFilter,
     TargetModel targetModel = TargetModel.flutter,
-    List<String> experimentalFlags,
     ResidentCompiler generator,
   }) : assert(trackWidgetCreation != null),
        generator = generator ?? ResidentCompiler(
@@ -44,7 +43,6 @@
          fileSystemRoots: fileSystemRoots,
          fileSystemScheme: fileSystemScheme,
          targetModel: targetModel,
-         experimentalFlags: experimentalFlags,
        );
 
   final Device device;