Clean up import statements to only import what is necessary.

[wddgit]

Note that the change in patPFMETCorrections_cff moves the
import * in the right direction and allows fixing the other
files, but leaves more work to be done elsewhere in another PR.

[cmsbuild]

A new Pull Request was created by @wddgit (W. David Dagenhart) for CMSSW_9_0_X.

It involves the following packages:

JetMETCorrections/Type1MET
PhysicsTools/PatAlgos
PhysicsTools/PatUtils

@cmsbuild, @cvuosalo, @slava77, @monttj, @davidlange6 can you please review it and eventually sign? Thanks.
@TaiSakuma, @gouskos, @imarches, @ahinzmann, @acaudron, @mmarionncern, @rappoccio, @jdolen, @nhanvtran, @gpetruc, @gkasieczka, @schoef, @ferencek, @mverzett, @mariadalfonso, @pvmulder, @JyothsnaKomaragiri this is something you requested to watch as well.
@davidlange6, @smuzaffar you are the release manager for this.

cms-bot commands are listed here #13028

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/17316/console Started: 2017/01/18 00:44

[cmsbuild]

+1
Tested at: 6b6caf3
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-17197/17316/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-17197/17316/summary.html

[slava77]

+1

for #17197 6b6caf3

• modified as described
• jenkins tests pass and comparisons show no differences

[monttj]

+1

[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. @davidlange6, @smuzaffar

[davidlange6]

+1