Fix 'Unused local variable' hints in analyzer and analysis_server.

pkg/analyzer/test/generated/ast_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.ast_test;
 
 import 'package:analyzer/src/generated/java_core.dart';
@@ skipping 939 matching lines @@
           }
         }
       }
     }
   }
 
   void test_inGetterContext_forEachLoop() {
     SimpleIdentifier identifier = AstFactory.identifier3("a");
     Expression iterator = AstFactory.listLiteral([]);
     Statement body = AstFactory.block([]);
-    ForEachStatement forEachStatement =
-        AstFactory.forEachStatement2(identifier, iterator, body);
+    AstFactory.forEachStatement2(identifier, iterator, body);
     expect(identifier.inGetterContext(), isFalse);
   }
 
   void test_inReferenceContext() {
     SimpleIdentifier identifier = AstFactory.identifier3("id");
     AstFactory.namedExpression(AstFactory.label(identifier), AstFactory.identifier3("_"));
     expect(identifier.inGetterContext(), isFalse);
     expect(identifier.inSetterContext(), isFalse);
   }
 
@@ skipping 11 matching lines @@
           }
         }
       }
     }
   }
 
   void test_inSetterContext_forEachLoop() {
     SimpleIdentifier identifier = AstFactory.identifier3("a");
     Expression iterator = AstFactory.listLiteral([]);
     Statement body = AstFactory.block([]);
-    ForEachStatement forEachStatement =
-        AstFactory.forEachStatement2(identifier, iterator, body);
+    AstFactory.forEachStatement2(identifier, iterator, body);
     expect(identifier.inSetterContext(), isTrue);
   }
 
   void test_isQualified_inMethodInvocation_noTarget() {
     MethodInvocation invocation = AstFactory.methodInvocation2("test", [AstFactory.identifier3("arg0")]);
     SimpleIdentifier identifier = invocation.methodName;
     expect(identifier.isQualified, isFalse);
   }
 
   void test_isQualified_inMethodInvocation_withTarget() {
@@ skipping 195 matching lines @@
     SimpleStringLiteral stringLiteral = new SimpleStringLiteral(token, "value");
     expect(stringLiteral.literal, same(token));
     expect(stringLiteral.beginToken, same(token));
     expect(stringLiteral.endToken, same(token));
     expect(stringLiteral.value, "value");
   }
 }
 
 class StringInterpolationTest extends ParserTestCase {
   void test_contentsOffsetEnd() {
-    var be = AstFactory.interpolationExpression(AstFactory.identifier3('bb'));
+    AstFactory.interpolationExpression(AstFactory.identifier3('bb'));
     // 'a${bb}ccc'
     {
       var ae = AstFactory.interpolationString("'a", "a");
       var cToken = new StringToken(TokenType.STRING, "ccc'", 10);
       var cElement = new InterpolationString(cToken, 'ccc');
       StringInterpolation node = AstFactory.string([ae, ae, cElement]);
       expect(node.contentsOffset, 1);
       expect(node.contentsEnd, 10 + 4 - 1);
     }
     // '''a${bb}ccc'''
@@ skipping 1407 matching lines @@
   runReflectiveTests(BreadthFirstVisitorTest);
   runReflectiveTests(ClassDeclarationTest);
   runReflectiveTests(ClassTypeAliasTest);
   runReflectiveTests(IndexExpressionTest);
   runReflectiveTests(NodeListTest);
   runReflectiveTests(SimpleIdentifierTest);
   runReflectiveTests(SimpleStringLiteralTest);
   runReflectiveTests(StringInterpolationTest);
   runReflectiveTests(VariableDeclarationTest);
 }