Remove BuildConfigurations (#3879)

Artifacts from local engine builds will be found based on the --local-engine flag

packages/flutter_tools/lib/src/ios/devices.dart

diff --git a/packages/flutter_tools/lib/src/ios/devices.dart b/packages/flutter_tools/lib/src/ios/devices.dart
index d64fe0e..3fa0609 100644
--- a/packages/flutter_tools/lib/src/ios/devices.dart
+++ b/packages/flutter_tools/lib/src/ios/devices.dart
@@ -11,7 +11,7 @@
 import '../application_package.dart';
 import '../base/os.dart';
 import '../base/process.dart';
-import '../build_configuration.dart';
+import '../build_info.dart';
 import '../device.dart';
 import '../globals.dart';
 import 'mac.dart';

packages/flutter_tools/lib/src/ios/setup_xcodeproj.dart

diff --git a/packages/flutter_tools/lib/src/ios/setup_xcodeproj.dart b/packages/flutter_tools/lib/src/ios/setup_xcodeproj.dart
index e8d68b1..71a2eda 100644
--- a/packages/flutter_tools/lib/src/ios/setup_xcodeproj.dart
+++ b/packages/flutter_tools/lib/src/ios/setup_xcodeproj.dart
@@ -9,7 +9,7 @@
 
 import '../artifacts.dart';
 import '../base/process.dart';
-import '../build_configuration.dart';
+import '../build_info.dart';
 import '../globals.dart';
 import '../runner/flutter_command_runner.dart';
 

packages/flutter_tools/lib/src/ios/simulators.dart

diff --git a/packages/flutter_tools/lib/src/ios/simulators.dart b/packages/flutter_tools/lib/src/ios/simulators.dart
index 3f289cc..2494cc9 100644
--- a/packages/flutter_tools/lib/src/ios/simulators.dart
+++ b/packages/flutter_tools/lib/src/ios/simulators.dart
@@ -11,7 +11,7 @@
 import '../application_package.dart';
 import '../base/context.dart';
 import '../base/process.dart';
-import '../build_configuration.dart';
+import '../build_info.dart';
 import '../device.dart';
 import '../flx.dart' as flx;
 import '../globals.dart';