Allow PHP to edit the regex file if installed

Fixes permissions error on the web interface when modifying the regex.

Signed-off-by: Mcat12 <newtoncat12@yahoo.com>

gravity.sh

@@ -643,11 +643,6 @@ if [[ "${skipDownload}" == false ]] || [[ "${listType}" == "whitelist" ]]; then
   gravity_Whitelist
 fi
 
-# Set proper permissions on the regex file
-touch "${regexFile}"
-chown pihole:www-data "${regexFile}"
-chmod 664 "${regexFile}"
-
 convert_wildcard_to_regex
 gravity_ShowBlockCount