Remove unnecessary code

Backward compatibility is not an option

Author: Oliver Cervera

snapraid-aio-script.sh

@@ -8,7 +8,7 @@
 ######################
 #   CONFIG VARIABLES #
 ######################
-SNAPSCRIPTVERSION="3.2-DEV3"
+SNAPSCRIPTVERSION="3.2-DEV4"
 
 # Read SnapRAID version
 SNAPRAIDVERSION="$(snapraid -V | sed -e 's/snapraid v\(.*\)by.*/\1/')"
@@ -20,9 +20,6 @@ CONFIG_FILE=$CURRENT_DIR/script-config.sh
 #shellcheck source=script-config.sh
 source "$CONFIG_FILE"
 
-# set default variables for backward compatibility with older config files
-: ${HEALTHCHECKS_URL:="https://hc-ping.com/"}
-
 ########################################################################
 
 SYNC_MARKER="SYNC -"