🚧Remove repo related docs

[kselena]

Complete The Item Below

• [X] I have updated the title without removing the 🚧 emoji.

Description

Remove repo specific docs that exist at the org level.

Update link in READme to point to the org level contribution document.

Acceptance Criteria

• [x] Contributing
• [x] Code_of_Conduct
• [x] ./documentation/branching.md
• [x] Table of Contents folder
• [x] EnvironmentSetup folder
• [x] Funding

ToDo Items

• [X] Change type labels added to this issue. Refer to the Change Type Labels section below.
• [X] Priority label added to this issue. Refer to the Priority Type Labels section below.
• [X] Issue linked to the correct project (if applicable).
• [X] Issue linked to the correct milestone (if applicable).
• [x] Draft pull request created and linked to this issue (only required with code changes).

Issue Dependencies

No response

Related Work

No response

Additional Information:

Change Type Labels

Change Type	Label
Bug Fixes	🐛bug
Breaking Changes	🧨breaking changes
New Feature	✨new feature
Workflow Changes	workflow
Code Doc Changes	🗒️documentation/code
Product Doc Changes	📝documentation/product

Priority Type Labels

Priority Type	Label
Low Priority	low priority
Medium Priority	medium priority
High Priority	high priority

Code of Conduct

• [X] I agree to follow this project's Code of Conduct.