Travis coverage: remove ignored stuff in a single go
Travis coverage: remove ignored stuff in a single go

This makes the output slightly more readable

cucumber/cucumber-cpp,konserw/cucumber-cpp,muggenhor/cucumber-cpp,meshell/cucumber-cpp,AbletonAppDev/cucumber-cpp,meshell/cucumber-cpp,AbletonAppDev/cucumber-cpp,paoloambrosio/cucumber-cpp,cucumber/cucumber-cpp,konserw/cucumber-cpp,AbletonAppDev/cucumber-cpp,meshell/cucumber-cpp,cucumber/cucumber-cpp,muggenhor/cucumber-cpp,konserw/cucumber-cpp,muggenhor/cucumber-cpp,paoloambrosio/cucumber-cpp,paoloambrosio/cucumber-cpp