Unused function collectSourceIndicesFromThreads

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#6,086 opened on Jun 4, 2026 0 comments 0 reactions 0 assignees View on GitHub

code maintenance good first issue

Description

It looks like we landed `collectSourceIndicesFromThreads` even though we removed the uses of it. Let's remove it.

┆Issue is synchronized with this [Jira Task](https://mozilla-hub.atlassian.net/browse/FP-1328)

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