chore: Clean up CircleCI Configuraiton

[emilyrohrbough]

#19037 has been merged. Clean up the branch name from the CircleCI configuration.

User facing changelog

n/a

How has the user experience changed?

n/a

PR Tasks

• [n/a] Have tests been added/updated?
• [n/a] Has the original issue (or this PR, if no issue exists) been tagged with a release in ZenHub? (user-facing changes only)
• [n/a] Has a PR for user-facing changes been opened in cypress-documentation?
• [n/a] Have API changes been updated in the type definitions?
• [n/a] Have new configuration options been added to the cypress.schema.json?

[cypress-bot]

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[cypress]

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Test summary

4248 • 0 • 47 • 0 • 0

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Run details

Project	cypress
Status	Passed
Commit	4323d95
Started	Dec 2, 2021 9:28 PM
Ended	Dec 2, 2021 9:38 PM
Duration	09:51 💡
OS	Linux Debian - 10.10
Browser	Chrome beta 96

View run in Cypress Dashboard ➡️

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