delete unnecessary rbf_ARD.py
delete unnecessary rbf_ARD.py

Dapid/GPy,ptonner/GPy,dhhjx880713/GPy,AlexGrig/GPy,fivejjs/GPy,mikecroucher/GPy,buntyke/GPy,strongh/GPy,gusmaogabriels/GPy,TianpeiLuke/GPy,esiivola/GPYgradients,beckdaniel/GPy,maaskola/GPy,dhhjx880713/GPy,PredictiveScienceLab/GPy,AlexGrig/GPy,esiivola/GPYgradients,ysekky/GPy,ysekky/GPy,PredictiveScienceLab/GPy,ysekky/GPy,strongh/GPy,gusmaogabriels/GPy,esiivola/GPYgradients,beckdaniel/GPy,Dapid/GPy,dhhjx880713/GPy,maaskola/GPy,befelix/GPy,TianpeiLuke/GPy,mikecroucher/GPy,strongh/GPy,AlexGrig/GPy,AlexGrig/GPy,dhhjx880713/GPy,ptonner/GPy,maaskola/GPy,ptonner/GPy,maaskola/GPy,PredictiveScienceLab/GPy,SheffieldML/GPy,TianpeiLuke/GPy,ptonner/GPy,beckdaniel/GPy,SheffieldML/GPy,Dapid/GPy,buntyke/GPy,jameshensman/GPy,jameshensman/GPy,mikecroucher/GPy,mikecroucher/GPy,buntyke/GPy,Dapid/GPy,beckdaniel/GPy,befelix/GPy,buntyke/GPy,jameshensman/GPy,SheffieldML/GPy,esiivola/GPYgradients,befelix/GPy,ysekky/GPy,jameshensman/GPy,avehtari/GPy,PredictiveScienceLab/GPy,fivejjs/GPy,gusmaogabriels/GPy,befelix/GPy,avehtari/GPy,avehtari/GPy,avehtari/GPy,SheffieldML/GPy,fivejjs/GPy