Removed "touch" on sources.list.d (#10427)

touch is not necessary as the "tee" command will create the file regardless if it exists or not

content/en/docs/tasks/tools/install-kubectl.md

@@ -28,7 +28,6 @@ Here are a few methods to install kubectl.
 {{< tab name="Ubuntu, Debian or HypriotOS" codelang="bash" >}}
 sudo apt-get update && sudo apt-get install -y apt-transport-https
 curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
-sudo touch /etc/apt/sources.list.d/kubernetes.list 
 echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list
 sudo apt-get update
 sudo apt-get install -y kubectl