Remove obsolete tracking configuration files

[makortel]

This PR suggests to remove all the now-obsolete *Phase1PU70*, *Phase1PU140*, *Phase2PU140*, and *LowPU* tracking configuration files, and a couple of others I encountered/remembered lately.

Tested in CMSSW_9_0_X_2016-11-17-2300, no changes expected.

@rovere @VinInn @ebrondol

[makortel]

@cmsbuild, please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/16502/console

[cmsbuild]

A new Pull Request was created by @makortel (Matti Kortelainen) for CMSSW_9_0_X.

It involves the following packages:

RecoPixelVertexing/PixelTrackFitting
RecoTracker/Configuration
RecoTracker/ConversionSeedGenerators
RecoTracker/FinalTrackSelectors
RecoTracker/IterativeTracking

@cmsbuild, @cvuosalo, @slava77, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @felicepantaleo, @GiacomoSguazzoni, @rovere, @VinInn, @mschrode, @gpetruc, @dgulhan this is something you requested to watch as well.
@slava77, @smuzaffar you are the release manager for this.

cms-bot commands are listed here #13028

[cmsbuild]

+1
Tested at: 991f1af
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16698/16502/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16698/16502/summary.html

[ebrondol]

Thanks @makortel

[cvuosalo]

+1

For #16698 991f1af

Deleting obsolete tracking config files. There should be no change in monitored quantities.

Jenkins tests against baseline CMSSW_9_0_X_2016-11-20-1100 show no significant differences, as expected.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_9_0_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @smuzaffar

[davidlange6]

+1