chore: Remove all Prefect 1 Code references

[jamiezieziula]

Description

Remove all references to v1/legacy code (prefect 1)

What's cooking? If this PR references an issue, please attach to the existing issue.

Type of change

• [ ] New feature (non-breaking change which adds functionality)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] This change requires a documentation update

New Recipe Checklist

• [ ] My PR is in the format of Add <project-name> recipe
• [ ] My recipe is reproducible and explains everything needed to run successfully. If my code has external dependencies, I make mention of them.
• [ ] My code is easily understandable and/or well-commented.
• [ ] If my recipe requires a new category (e.g. creating a monitoring/ folder in devops/), I have encapsulated my project within its own subfolder so that others can add their own recipes as well.
• [ ] If my recipe uses Prefect < 2.0, my code is within the prefect-v1-legacy/ folder.

[serinamarie]

@jamiezieziula just gonna close this since it's been some time. feel free to reopen!