Clean-up the registration of plugins

pkg/analyzer/test/src/task/inputs_test.dart

Index: pkg/analyzer/test/src/task/inputs_test.dart
diff --git a/pkg/analyzer/test/src/task/inputs_test.dart b/pkg/analyzer/test/src/task/inputs_test.dart
index 3943a9955e9ec9ae738141926a71e284761727d6..5ebbaecd1bae10a5182631d7dafccf2eba8c8073 100644
--- a/pkg/analyzer/test/src/task/inputs_test.dart
+++ b/pkg/analyzer/test/src/task/inputs_test.dart
@@ -37,6 +37,7 @@ class ConstantTaskInputBuilderTest extends EngineTestCase {
   ConstantTaskInputBuilder builder;
 
   void setUp() {
+    super.setUp();
     builder = new ConstantTaskInputBuilder(input);
   }
 
@@ -555,7 +556,7 @@ class ListToMapTaskInputTest extends EngineTestCase {
 }
 
 @reflectiveTest
-class ObjectToListTaskInputBuilderTest extends EngineTestCase {
+class ObjectToListTaskInputBuilderTest {
   static final AnalysisTarget target = new TestSource();
   static final ResultDescriptorImpl result =
       new ResultDescriptorImpl('result', null);
@@ -705,7 +706,7 @@ class ObjectToListTaskInputTest extends EngineTestCase {
 }
 
 @reflectiveTest
-class SimpleTaskInputBuilderTest extends EngineTestCase {
+class SimpleTaskInputBuilderTest {
   static final AnalysisTarget target = new TestSource();
   static final ResultDescriptorImpl result =
       new ResultDescriptorImpl('result', null);