Clean up clang warnings

[ianna]

• Remove warnings of hidden overloaded virtual function
• Remove warnings of overridden virtual function

[ianna]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/12892/console

[cmsbuild]

A new Pull Request was created by @ianna (Ianna Osborne) for CMSSW_8_1_X.

It involves the following packages:

Geometry/CommonTopologies
Geometry/EcalAlgo
Geometry/ForwardGeometry
Geometry/HGCalGeometry
Geometry/TrackerGeometryBuilder

@civanch, @Dr15Jones, @ianna, @mdhildreth, @cmsbuild, @davidlange6 can you please review it and eventually sign? Thanks.
@makortel, @ghellwig, @argiro, @VinInn, @venturia this is something you requested to watch as well.
@slava77, @Degano, @smuzaffar you are the release manager for this.

cms-bot commands are list here #13028

[cmsbuild]

+1
Tested at: f30cd7e
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-14428/12892/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-14428/12892/summary.html

[ianna]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_8_1_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1