switch from jshint to eslint

grunt/config/jshint.js

@@ -1,14 +0,0 @@
-module.exports = {
-  source: {
-    src: [
-      'src/**/*.js -src/elasticsearch*/**/* -<%= bowerSubmodule %>/**/*',
-      'scripts/**/*.js',
-      'test/**/*.js -test/browser_integration/yaml_tests.js',
-      'grunt/**/*.js',
-      'Gruntfile.js'
-    ],
-    options: {
-      jshintrc: true
-    }
-  }
-};

grunt/config/watch.js

@@ -7,11 +7,10 @@ module.exports = {
       'Gruntfile.js'
     ],
     tasks: [
-      'jshint',
       'mochacov:unit'
     ],
     options: {
       interrupt: true
     }
   }
-};
+};

grunt/tasks.js

@@ -12,7 +12,6 @@ module.exports = function (grunt) {
 
   grunt.registerTask('test', function (branch) {
     var tasks = [
-      'jshint',
       branch ? 'run:generate_' + branch : 'run:generate',
       'mochacov:unit'
     ];