ActsGeometry+ActsTrackReconstruction: Fix clang warnings.

Unused private data members.

This merge request affects 2 packages:

• Tracking/Acts/ActsGeometry
• Tracking/Acts/ActsTrackReconstruction

Affected files list will not be printed in this case

Adding @goetz ,@pagessin ,@jojungge ,@toyamaza ,@tbold ,@cvarni as watchers

added ACTS Tracking main review-pending-level-1 labels

CI Result SUCCESS (hash 04a368fd)

	Athena
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 79337]

Changes look fine and the CI is good. Approving. Clara (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 299d57a4

added sweep:ignore label