Fix flake8 warning
Fix flake8 warning

swak/mopidy,dbrgn/mopidy,rawdlite/mopidy,mopidy/mopidy,bacontext/mopidy,jcass77/mopidy,hkariti/mopidy,pacificIT/mopidy,quartz55/mopidy,pacificIT/mopidy,ali/mopidy,jmarsik/mopidy,jodal/mopidy,SuperStarPL/mopidy,pacificIT/mopidy,jcass77/mopidy,mopidy/mopidy,SuperStarPL/mopidy,SuperStarPL/mopidy,glogiotatidis/mopidy,adamcik/mopidy,glogiotatidis/mopidy,ZenithDK/mopidy,hkariti/mopidy,hkariti/mopidy,kingosticks/mopidy,swak/mopidy,hkariti/mopidy,glogiotatidis/mopidy,tkem/mopidy,ali/mopidy,quartz55/mopidy,bacontext/mopidy,bencevans/mopidy,vrs01/mopidy,quartz55/mopidy,swak/mopidy,mokieyue/mopidy,bencevans/mopidy,jmarsik/mopidy,dbrgn/mopidy,vrs01/mopidy,ZenithDK/mopidy,ali/mopidy,rawdlite/mopidy,ZenithDK/mopidy,bencevans/mopidy,dbrgn/mopidy,mokieyue/mopidy,mokieyue/mopidy,ZenithDK/mopidy,jcass77/mopidy,vrs01/mopidy,bacontext/mopidy,jmarsik/mopidy,mokieyue/mopidy,tkem/mopidy,SuperStarPL/mopidy,pacificIT/mopidy,kingosticks/mopidy,quartz55/mopidy,diandiankan/mopidy,vrs01/mopidy,rawdlite/mopidy,dbrgn/mopidy,jodal/mopidy,tkem/mopidy,bacontext/mopidy,ali/mopidy,adamcik/mopidy,diandiankan/mopidy,diandiankan/mopidy,glogiotatidis/mopidy,jodal/mopidy,jmarsik/mopidy,bencevans/mopidy,adamcik/mopidy,swak/mopidy,kingosticks/mopidy,diandiankan/mopidy,mopidy/mopidy,tkem/mopidy,rawdlite/mopidy