Remove duplicated imports and Apply no-relative-imports

[kushthedude]

There have been a bunch of warnings while running the app due to the following.
References :
https://eslint.org/docs/rules/no-duplicate-imports
https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-relative-parent-imports.md

[snitin315]

I will work on this issue.

[iamareebjamal]

Fixed in #4096