Remove Composer-less functionality from master branch

Author: adamwathan

cli/scripts/install.sh

@@ -29,14 +29,6 @@ then
     exit
 fi
 
-# If the command is to run the updater we'll run the updater script and
-# let it handle this entire update. It will download a fresh copy of
-# Valet and replace the current install with the "fresh" download.
-if [[ "$1" = "update" ]]
-then
-    bash $DIR/cli/scripts/update.sh
-    exit
-
 # If the command is the "share" command we will need to resolve out any
 # symbolic links for the site. Before starting Ngrok, we will fire a
 # process to retrieve the live Ngrok tunnel URL in the background.