Removing total_time from JSON export, unless it's for the final commit

src/cmi/scorm12_cmi.js

@@ -512,7 +512,6 @@ class CMICore extends BaseCMI {
    *      lesson_location: string,
    *      lesson_status: string,
    *      credit: string,
-   *      total_time: string,
    *      session_time: *
    *    }
    *  }
@@ -526,7 +525,6 @@ class CMICore extends BaseCMI {
       'credit': this.credit,
       'lesson_status': this.lesson_status,
       'entry': this.entry,
-      'total_time': this.total_time,
       'lesson_mode': this.lesson_mode,
       'exit': this.exit,
       'session_time': this.session_time,

src/cmi/scorm2004_cmi.js

@@ -507,8 +507,7 @@ export class CMI extends BaseCMI {
    *      session_time: string,
    *      success_status: string,
    *      suspend_data: string,
-   *      time_limit_action: string,
-   *      total_time: string
+   *      time_limit_action: string
    *    }
    *  }
    */
@@ -538,7 +537,6 @@ export class CMI extends BaseCMI {
       'success_status': this.success_status,
       'suspend_data': this.suspend_data,
       'time_limit_action': this.time_limit_action,
-      'total_time': this.total_time,
     };
     delete this.jsonString;
     return result;