Issue #3469915: A lot of unused variables

Closes #3469915

added 1 commit

• b7290ce7 - Remove unused namespaces.

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added 3 commits

• b7290ce7...10540985 - 2 commits from branch project:8.x-1.x
• dcd78c1b - Merge remote-tracking branch 'origin/8.x-1.x' into 3469915-a-lot-of

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