Remove dead code from Branches/Environments/Geo helpers
What does this MR do and why?
Contributes to #420057
Problem
We have methods in helpers that we don't use anywhere.
Solution
Remove unused code.
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
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I have evaluated the MR acceptance checklist for this MR.