Decrease time between service restarts when rebuilding during upgrade

install/upgrade/0.10.0-190430.sh

@@ -321,11 +321,8 @@ done
 for user in `ls /usr/local/hestia/data/users/`; do
     echo "(*) Rebuilding domains and account for user: $user..."
     v-rebuild-web-domains $user >/dev/null 2>&1
-    sleep 1
     v-rebuild-dns-domains $user >/dev/null 2>&1
-    sleep 1
     v-rebuild-mail-domains $user >/dev/null 2>&1
-    sleep 1
 done
 
 # Adding upgrade notification