Remove unnecessary maxlen declarations

maxlen has been deprecated by JSHint

openassessment/xblock/static/js/src/lms/oa_response.js

@@ -257,7 +257,6 @@ OpenAssessment.ResponseView.prototype = {
             if (enabled) {
                 window.onbeforeunload = function() {
                     // Keep this on one big line to avoid gettext bug: http://stackoverflow.com/a/24579117
-                    /* jshint maxlen:300 */
                     return gettext("If you leave this page without saving or submitting your response, you'll lose any work you've done on the response.");
                 };
             }
@@ -478,7 +477,6 @@ OpenAssessment.ResponseView.prototype = {
     **/
     confirmSubmission: function() {
         // Keep this on one big line to avoid gettext bug: http://stackoverflow.com/a/24579117
-        /* jshint maxlen:300 */
         var msg = gettext("You're about to submit your response for this assignment. After you submit this response, you can't change it or submit a new response.");
         // TODO -- UI for confirmation dialog instead of JS confirm
         return $.Deferred(function(defer) {

openassessment/xblock/static/js/src/studio/oa_edit_listeners.js

@@ -93,7 +93,6 @@ OpenAssessment.StudentTrainingListener.prototype = {
         });
 
         if (criterionAdded) {
-            /* jshint maxlen:300 */
             this.displayAlertMsg(
                 gettext("Criterion Added"),
                 gettext("You have added a criterion. You will need to select an option for the criterion in the Learner Training step. To do this, click the Settings tab.")
@@ -141,7 +140,6 @@ OpenAssessment.StudentTrainingListener.prototype = {
         });
 
         if (invalidated) {
-            /* jshint maxlen:300 */
             this.displayAlertMsg(
                 gettext("Option Deleted"),
                 gettext("You have deleted an option. That option has been removed from its criterion in the sample responses in the Learner Training step. You might have to select a new option for the criterion.")
@@ -177,7 +175,6 @@ OpenAssessment.StudentTrainingListener.prototype = {
         });
 
         if (changed) {
-            /* jshint maxlen:300 */
             this.displayAlertMsg(
                 gettext("Option Deleted"),
                 gettext("You have deleted all the options for this criterion. The criterion has been removed from the sample responses in the Learner Training step.")
@@ -205,7 +202,6 @@ OpenAssessment.StudentTrainingListener.prototype = {
         );
 
         if (changed) {
-            /* jshint maxlen:300 */
             this.displayAlertMsg(
                 gettext("Criterion Deleted"),
                 gettext("You have deleted a criterion. The criterion has been removed from the example responses in the Learner Training step.")