Removed code smells and possible error and bugs from codebase

This PR is removing the code smell from codebase. Due to lot of contribution lot of code smell have been created mistakenly, which i am removing through this PR. So basically this PR is doing:

Removing huge errors.
Removing code smells.
Removing unnecessary data,
Making the codebase better and hence maintaining the data integrity.

Typhoid BOT: https://ps-19.github.io/bot/

Advanced Task

1) Task-1 a) Demo Video b) Demo Video c) Dataset

2) Task-2 a) Demo Video b) Complete Documentation

 Complete App:
      i) [Figma](https://www.figma.com/file/OmiDLNA8nqsAzeJtrw15mU/Priyansh-Singh-Typoid-Fever?node-id=0%3A1)
      ii) [Technical Documentation](https://docs.google.com/document/d/1Lf84SVycahVKrOVtYRzmsEAmLgT2sK8yNhAP6Wfh6m4/edit?usp=sharing)

 App Typhoid Prediction Feature:
      i) [Figma](https://www.figma.com/file/9aZzvnHegYajVwN8r3KxAK/Typhoid-Fever-Prediction?node-id=0%3A1)
      ii) [Technical Documentation](https://docs.google.com/document/d/1dJfqPvf0Vm4xr14QiVF-CQ-DQST4SKTbIvMQ53wN6nw/edit?usp=sharing)

Mboalab / Mboalab_Outreachy-May-Aug-2022

Removed code smells and possible error and bugs from codebase #94