remove deprecation warning

lib/mkramdisk

@@ -5,7 +5,7 @@
 # mkramdisk -- mount a ramdisk on top of a directory
 #
 # This script is part of FAI (Fully Automatic Installation)
-# (c) 2003-2014 by Thomas Lange, lange@informatik.uni-koeln.de
+# (c) 2003-2022 by Thomas Lange, lange@informatik.uni-koeln.de
 # Universitaet zu Koeln
 #
 #*********************************************************************
@@ -81,11 +81,6 @@ while getopts ans:u opt ; do
 done
 shift $((OPTIND - 1))
 
-if [ -n "$FAI_NORAMDISK" ]; then
-    echo "The use of \$FAI_NORAMDISK is now deprecated. Please use \$FAI_RAMDISKS instead." >&2
-    exit 99
-fi
-
 # set default dirs if FAI_RAMDISKS not already set
 : ${FAI_RAMDISKS:="$target/var/lib/dpkg"}