Remove generic parameters from type inference classes.

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

Index: pkg/front_end/lib/src/fasta/kernel/body_builder.dart
diff --git a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
index 926bfb6eb4876a40647a239702aa2a2cf1d38ced..5371a5dbbb90bf2f59bea2fdab04ca8219be83c8 100644
--- a/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/body_builder.dart
@@ -97,8 +97,7 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
   @override
   final Uri uri;
 
-  final TypeInferrer<Statement, Expression, VariableDeclaration, KernelField>
-      _typeInferrer;
+  final TypeInferrer _typeInferrer;
 
   @override
   final AstFactory astFactory;
@@ -109,7 +108,7 @@ class BodyBuilder extends ScopeListener<JumpTarget> implements BuilderHelper {
   /// If not `null`, dependencies on fields are accumulated into this list.
   ///
   /// If `null`, no dependency information is recorded.
-  final List<FieldNode<KernelField>> fieldDependencies;
+  final List<FieldNode> fieldDependencies;
 
   /// Only used when [member] is a constructor. It tracks if an implicit super
   /// initializer is needed.