Add missed Clean in BenchmarkCompetitionTask, Fixed #4
Add missed Clean in BenchmarkCompetitionTask, Fixed #4

redknightlois/BenchmarkDotNet,adamsitnik/BenchmarkDotNet,Ky7m/BenchmarkDotNet,alinasmirnova/BenchmarkDotNet,Ky7m/BenchmarkDotNet,PerfDotNet/BenchmarkDotNet,ig-sinicyn/BenchmarkDotNet,adamsitnik/BenchmarkDotNet,redknightlois/BenchmarkDotNet,Teknikaali/BenchmarkDotNet,Ky7m/BenchmarkDotNet,Ky7m/BenchmarkDotNet,ig-sinicyn/BenchmarkDotNet,ig-sinicyn/BenchmarkDotNet,adamsitnik/BenchmarkDotNet,alinasmirnova/BenchmarkDotNet,adamsitnik/BenchmarkDotNet,ig-sinicyn/BenchmarkDotNet,redknightlois/BenchmarkDotNet,alinasmirnova/BenchmarkDotNet,Teknikaali/BenchmarkDotNet,PerfDotNet/BenchmarkDotNet,PerfDotNet/BenchmarkDotNet,alinasmirnova/BenchmarkDotNet,NN---/BenchmarkDotNet,Teknikaali/BenchmarkDotNet