Remove redundant check for "requests" module

[kno10]

requests is imported in line 17, and hence required:

chroma/chromadb/utils/embedding_functions.py

Line 17 in 33289e8

import requests

[github-actions]

Reviewer Checklist

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Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
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System Compatibility

• Are there any potential impacts on other parts of the system or backward compatibility?
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Quality

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[beggers]

Thank you Dr. Schubert! Always happy to remove some unneeded code.