diff --git a/tools/transpiler/gulp-tasks.js b/tools/transpiler/gulp-tasks.js
deleted file mode 100644
index 0b42378425..0000000000
--- a/tools/transpiler/gulp-tasks.js
+++ /dev/null
@@ -1,104 +0,0 @@
-var rename = require('gulp-rename');
-var watch = require('gulp-watch');
-var gulpTraceur = require('./gulp-traceur');
-var shell = require('gulp-shell');
-var clean = require('gulp-rimraf');
-var mergeStreams = require('event-stream').merge;
-var ejs = require('gulp-ejs');
-var glob = require('glob');
-
-var baseDir = __dirname;
-var traceurDir = baseDir+'/../traceur';
-var buildDir = baseDir + '/build';
-
-var paths = {
-  transpilerSrc: baseDir + '/src/**/*.js',
-  specTranspile: baseDir + '/spec/**/*.js',
-  specTemplates: baseDir + '/spec/**/*.template',
-  specCopy: baseDir + '/spec/**/*.dart'
-};
-paths.specSrc = [paths.specTranspile, paths.specTemplates, paths.specCopy];
-
-module.exports.install = install;
-module.exports.paths = paths;
-
-function install(gulp) {
-  var runSequence = require('run-sequence').use(gulp);
-
-  var spec2dartOptions = {
-    annotations: true, // parse annotations
-    types: true, // parse types
-    script: false, // parse as a module
-    outputLanguage: 'dart'
-  };
-
-  gulp.task('transpiler/clean', function() {
-    return gulp.src(buildDir, {read: false})
-        .pipe(clean());
-  });
-
-  gulp.task('transpiler/test/build', function() {
-    return mergeStreams(specTranspile(false), specCopy(false), specRunner(false));
-  });
-
-  gulp.task('transpiler/test/run', shell.task([
-    'cd '+baseDir+' && dart --checked run_specs.dart'
-  ]));
-
-  gulp.task('transpiler/test', function(done) {
-    runSequence('transpiler/test/build', 'transpiler/test/run', done);
-  });
-
-  gulp.task('transpiler/src/watch', function(done) {
-    return watch(paths.transpilerSrc, function(changes, done) {
-      gulpTraceur.sourcesChanged();
-      runSequence('transpiler/test', done);
-    });
-  });
-
-  gulp.task('transpiler/test/watch', function(done) {
-    var streams = [];
-    streams.push(specTranspile(true)
-      .on('data', specRunner));
-    streams.push(specCopy(true));
-    streams.push(specRunner(true));
-    streams.forEach(function(stream) {
-      stream.on('error', done);
-      stream.on('data', function() {
-        runSequence('transpiler/test/run');
-      });
-    });
-  });
-
-  function specTranspile(isWatch) {
-    var srcFn = isWatch ? watch : gulp.src.bind(gulp);
-    return srcFn(paths.specTranspile)
-      .pipe(gulpTraceur(spec2dartOptions))
-      .pipe(rename({extname: '.dart'}))
-      .pipe(gulp.dest(buildDir+'/spec'));
-  }
-
-  function specCopy(isWatch) {
-   var srcFn = isWatch ? watch : gulp.src.bind(gulp);
-   return srcFn(paths.specCopy).pipe(gulp.dest(buildDir+'/spec'));
-  }
-
-  function specRunner(isWatch) {
-    var srcFn = isWatch ? watch : gulp.src.bind(gulp);
-    var builtSpecFiles = glob.sync('**/*_spec.js', {
-      cwd: baseDir+'/spec'
-    }).map(function(fileName) {
-      return fileName.replace('.js', '.dart');
-    });
-    return srcFn(paths.specTemplates)
-      .pipe(ejs({
-        files: builtSpecFiles
-      }))
-      .pipe(rename(function(path) {
-        path.basename = path.basename.replace(/\..*/g, '');
-        path.extname = '.dart';
-      }))
-      .pipe(gulp.dest(buildDir+'/spec'));
-  }
-}
-