Delete unnecessary files

[Xiaoyang-Gu]

Fixes : [#110 ]

Description :

Delete some unnecessary files and resolve the conflicts in App.js from last pr.

Screenshot of changes :

Please ensure Checkmark the following :

• [x] - Tested Localy
• [x] - Checked in IE11 and Firefox
• [ ] - Checked in mobile
• [ ] - Backend work
• [x] - Frontend work
• [x] - Bug Fixes
• [ ] - Enhancements

[Xiaoyang-Gu]

@hsluoyz @BetaCat0 @nodece There are some conflicts after last merge. Please review.