Removed unnecessary include and forward declaration of RefGetter

[Dr15Jones]

The edm::RefGetter class is no longer used by any code but its
include file was still being referenced in a few files.

[cmsbuild]

A new Pull Request was created by @Dr15Jones (Chris Jones) for CMSSW_7_6_X.

Removed unnecessary include and forward declaration of RefGetter

It involves the following packages:

DataFormats/TrackerRecHit2D
HLTrigger/special
RecoLocalTracker/SiStripRecHitConverter
RecoTracker/MeasurementDet

@perrotta, @cmsbuild, @cvuosalo, @slava77, @Martin-Grunewald, @fwyzard can you please review it and eventually sign? Thanks.
@ghellwig, @Martin-Grunewald, @makortel, @forthommel, @yduhm, @GiacomoSguazzoni, @gbenelli, @rovere, @VinInn, @nickmccoll, @mschrode, @jlagram, @cerati, @gpetruc, @istaslis, @threus, @dgulhan this is something you requested to watch as well.
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[Dr15Jones]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/8951/console

[cmsbuild]

+1
Tested at: cd768e3
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11847/8951/summary.html

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
f03c582
50c849a
05c1670
3814818
3b6f3e4
34cdb49
3f74840
35801cb
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11847/8951/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11847/8951/git-merge-result

[Martin-Grunewald]

+1

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11847/8951/summary.html

[cvuosalo]

+1

For #11847 cd768e3

Deleting unnecessary references to RefGetter. There should be no change in run-time behavior.

Compilation is successful. Jenkins tests are not really relevant, and, in this case, they show unrelated differences from several other PRs.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_6_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1