clean up gruntfile release steps

Author: Qianqianye

Gruntfile.js

@@ -248,65 +248,6 @@ module.exports = grunt => {
           'docs/reference/modules/',
           'docs/reference/api.js'
         ]
-      },
-      // Clean up files generated by release build
-      release: {
-        src: ['release/']
-      },
-      bower: {
-        src: ['bower-repo/']
-      }
-    },
-
-    // Static assets copy task. Used by release steps.
-    copy: {
-      release: {
-        expand: true,
-        src: [
-          'lib/p5.js',
-          'lib/p5.min.js',
-          'lib/addons/p5.sound.js',
-          'lib/addons/p5.sound.min.js'
-        ],
-        dest: 'release/',
-        flatten: true
-      },
-      bower: {
-        files: [
-          {
-            expand: true,
-            src: ['lib/p5.js', 'lib/p5.min.js'],
-            dest: 'bower-repo/'
-          },
-          {
-            expand: true,
-            src: 'lib/addons/*',
-            dest: 'bower-repo/'
-          }
-        ]
-      }
-    },
-
-    // Compresses the lib folder into the release zip archive.
-    // Used by the release step.
-    compress: {
-      main: {
-        options: {
-          archive: 'release/p5.zip'
-        },
-        files: [
-          {
-            cwd: 'lib/',
-            src: [
-              'p5.js',
-              'p5.min.js',
-              'addons/*',
-              'empty-example/*',
-              'README.txt'
-            ],
-            expand: true
-          }
-        ]
       }
     },
 
@@ -359,16 +300,12 @@ module.exports = grunt => {
   // NOTE: "module_x" is the name of it's folder in /src.
   grunt.loadTasks('tasks/build');
 
-  // Load release task
-  grunt.loadTasks('tasks/release');
-
   // Load tasks for testing
   grunt.loadTasks('tasks/test');
 
   // Load the external libraries used.
   grunt.loadNpmTasks('grunt-contrib-compress');
   grunt.loadNpmTasks('grunt-contrib-connect');
-  grunt.loadNpmTasks('grunt-contrib-copy');
   grunt.loadNpmTasks('grunt-eslint');
   grunt.loadNpmTasks('grunt-contrib-watch');
   grunt.loadNpmTasks('grunt-contrib-yuidoc');
@@ -414,11 +351,5 @@ module.exports = grunt => {
   grunt.registerTask('yui', ['yuidoc:prod', 'clean:reference', 'minjson']);
   grunt.registerTask('yui:test', ['yui', 'connect:yui', 'mochaChrome:yui']);
   grunt.registerTask('yui:dev', ['yui', 'build', 'connect:yui', 'watch:yui']);
-
-  // This is called by the "prepublishOnly" script in package.json to build the
-  // documentation and the library after np bumps up the version number so that
-  // the newly built files with the updated version number can be published.
-  grunt.registerTask('prerelease', ['yui', 'build']);
-
   grunt.registerTask('default', ['lint', 'test']);
 };