Remove Install doc notes about creating certain folders

doc/install/installation.md

@@ -203,14 +203,11 @@ You can change `6-6-stable` to `master` if you want the *bleeding edge* version,
     # Create directory for satellites
     sudo -u git -H mkdir /home/git/gitlab-satellites
 
-    # Create directories for sockets/pids and make sure GitLab can write to them
-    sudo -u git -H mkdir tmp/pids/
-    sudo -u git -H mkdir tmp/sockets/
+    # Make sure GitLab can write to the tmp/pids/ and tmp/sockets/ directories
     sudo chmod -R u+rwX tmp/pids/
     sudo chmod -R u+rwX tmp/sockets/
 
-    # Create public/uploads directory otherwise backup will fail
-    sudo -u git -H mkdir public/uploads
+    # Make sure GitLab can write to the public/uploads/ directory
     sudo chmod -R u+rwX  public/uploads
 
     # Copy the example Unicorn config