feat: Reduce transient startup status messages (#1863)

src/install.sh

@@ -1338,5 +1338,4 @@ if ! finishInstall "$BOOT" "N"; then
   exit 69
 fi
 
-html "Successfully prepared image for installation..."
 return 0

src/mido.sh

@@ -845,10 +845,8 @@ downloadFile() {
     fi
 
     verifyFile "$iso" "$size" "$total" "$sum" || return 1
-
     isCompressed "$url" && UNPACK="Y"
 
-    html "Download finished successfully..."
     return 0
   fi