Remove redundant "all" in workspaces_to_be_returned_finder.rb
What does this MR do and why?
Remove redundant "all" in workspaces_to_be_returned_finder.rb.
See !163836 (comment 2101088382)
MR acceptance checklist
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Screenshots or screen recordings
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How to set up and validate locally
The behavior should be identical, all tests should still pass.