Duplication of parameter declarations in SiStrip tracker DIGI

[fabiocos]

During the review of #23621 I commented about the evident duplication of parameters between

https://cmssdt.cern.ch/lxr/source/SimGeneral/MixingModule/python/SiStripSimParameters_cfi.py
and
https://cmssdt.cern.ch/lxr/source/SimTracker/SiStripDigitizer/python/SiStripDigiSimLink_cfi.py

It would seem appropriate to have a common PSet definition that is then imported in both configurations, avoiding duplications that are error prone. The problem was not introduced by the mentioned PR, it just enlarged it, and given the 10_2_X deadline I preferred to move forward anyway. But I open this issue to keep track of the request of code cleaning and follow it

[cmsbuild]

A new Issue was created by @fabiocos Fabio Cossutti.

@davidlange6, @Dr15Jones, @smuzaffar, @fabiocos can you please review it and eventually sign/assign? Thanks.

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[fabiocos]

assign simulation

[cmsbuild]

New categories assigned: simulation

@mdhildreth,@civanch you have been requested to review this Pull request/Issue and eventually sign? Thanks

[makortel]

It looks to me that the SiStripDigiSimLink_cfi.py and the DigiSimLinkProducer it refers to are both completely unused, so easiest would be to just remove them.

[fabiocos]

After the merge of #23644 this issue can be closed