Remove possible duplicates found in lower-quality adlists

Signed-off-by: DL6ER <dl6er@dl6er.de>

gravity.sh

@@ -160,10 +160,11 @@ database_table_from_file() {
       fi
     done
   fi
-
-
   inputfile="${tmpFile}"
 
+  # Remove possible duplicates found in lower-quality adlists
+  uniq -u "${inputfile}" "${inputfile}"
+
   # Store domains in database table specified by ${table}
   # Use printf as .mode and .import need to be on separate lines
   # see https://unix.stackexchange.com/a/445615/83260