Remove not needed and deprecated Boost.Signals header

[davidlt]

"boost/signals.hpp" is not used in the package and since Boost 1.56.0 is
considered unmaintained and deprecated.

warning: #warning "Boost.Signals is no longer being maintained and
is now deprecated. Please switch to Boost.Signals2. To disable this
warning message, define BOOST_SIGNALS_NO_DEPRECATION_WARNING." [-Wcpp]

The patch removes the header.

Signed-off-by: David Abdurachmanov David.Abdurachmanov@cern.ch

[cmsbuild]

A new Pull Request was created by @davidlt for CMSSW_7_3_X.

Remove not needed and deprecated Boost.Signals header

It involves the following packages:

SimG4Core/Geometry

@cmsbuild, @civanch, @nclopezo, @mdhildreth can you please review it and eventually sign? Thanks.
@makortel this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
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@nclopezo you are the release manager for this.
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[cmsbuild]

+1
Tested at: 27d0f65
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6399/888/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6399/888/summary.html

[civanch]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_3_X IBs unless changes (tests are also fine). This pull request will be automatically merged.