Remove unused API.

dart/sdk/lib/_internal/compiler/implementation/ssa/codegen.dart

 // Copyright (c) 2012, 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.
 
 part of ssa;
 
 class SsaCodeGeneratorTask extends CompilerTask {
 
   final JavaScriptBackend backend;
 
@@ skipping 47 matching lines @@
     }
     return element.getCompilationUnit().script.file;
   }
 
   js.Fun buildJavaScriptFunction(FunctionElement element,
                                  List<js.Parameter> parameters,
                                  js.Block body) {
     return attachPosition(new js.Fun(parameters, body), element);
   }
 
-  CodeBuffer prettyPrint(js.Node node) {
-    var code = js.prettyPrint(node, compiler, allowVariableMinification: true);
-    return code;
-  }
-
   js.Expression generateCode(CodegenWorkItem work, HGraph graph) {
     if (work.element.isField()) {
       return generateLazyInitializer(work, graph);
     } else {
       return generateMethod(work, graph);
     }
   }
 
   js.Expression generateLazyInitializer(work, graph) {
     return measure(() {
@@ skipping 318 matching lines @@
         return TYPE_STATEMENT;
       }
     } while (limits.contains(basicBlock));
     return result;
   }
 
   bool isJSExpression(HExpressionInformation info) {
     return !identical(expressionType(info), TYPE_STATEMENT);
   }
 
-  bool isJSDeclaration(HExpressionInformation info) {
-    return identical(expressionType(info), TYPE_DECLARATION);
-  }
-
   bool isJSCondition(HExpressionInformation info) {
     HSubExpressionBlockInformation graph = info;
     SubExpression limits = graph.subExpression;
     return !identical(expressionType(info), TYPE_STATEMENT) &&
        (limits.end.last is HConditionalBranch);
   }
 
   /**
    * Generate statements from block information.
    * If the block information contains expressions, generate only
@@ skipping 2137 matching lines @@
     if (left.isConstantNull() || right.isConstantNull() ||
         (left.isPrimitive(compiler) &&
          left.instructionType == right.instructionType)) {
       return '==';
     }
     return null;
   } else {
     return '===';
   }
 }