[Travis] Only run gcov through coveralls
[Travis] Only run gcov through coveralls

Gcov was run twice, first by the target ExperimentalCoverage
and then by coveralls.

As coveralls give a better coverage report and cdash is not used,
remove ExperimentalCoverage.

Signed-off-by: Kevin Rocard <f6672397850e914591889d29dcaf9077eb1a8a4f@intel.com>

anwarMov/parameter-framework,soaresm/parameter-framework,clero/parameter-framework,wzairix/parameter-framework,Makohoek/parameter-framework,anwarMov/parameter-framework,dawagner/parameter-framework,Makohoek/parameter-framework,krocard/parameter-framework,miguelgaio/parameter-framework,01org/parameter-framework,anwarMov/parameter-framework,mgaio/parameter-framework,android-ia/hardware_intel_parameter-framework,krocard/parameter-framework,dawagner/parameter-framework,zchokri/parameter-framework,dbrageul/parameter-framework,01org/parameter-framework,soaresm/parameter-framework,android-ia/hardware_intel_parameter-framework,wzairix/parameter-framework,soaresm/parameter-framework,sdnnfv/parameter-framework,mgaio/parameter-framework,dbrageul/parameter-framework,zchokri/parameter-framework,clero/parameter-framework,krocard/parameter-framework,dbrageul/parameter-framework,Makohoek/parameter-framework,miguelgaio/parameter-framework,android-ia/hardware_intel_parameter-framework,dawagner/parameter-framework,wzairix/parameter-framework,mgaio/parameter-framework,clero/parameter-framework,sdnnfv/parameter-framework,sdnnfv/parameter-framework,miguelgaio/parameter-framework,01org/parameter-framework,zchokri/parameter-framework