remove artefacts at the L1 input
Remove O(N^2) leftovers of the old L1 strip numbering scheme. Use strip numbering provided by the Sts hit finder intermediately. In particular, remove separate numbering of front and back strips.
Remove O(N^2) leftovers of the old L1 strip numbering scheme. Use strip numbering provided by the Sts hit finder intermediately. In particular, remove separate numbering of front and back strips.
