chore: remove do-nothing cron script (#7358)

bin/mm_hourly

@@ -1,23 +0,0 @@
-#!/bin/bash
-
-# Hourly datatracker jobs, ***run as mailman***
-# 
-# This script is expected to be triggered by cron from
-# $DTDIR/etc/cron.d/datatracker which should be symlinked from
-# /etc/cron.d/
-
-export LANG=en_US.UTF-8
-export PYTHONIOENCODING=utf-8
-
-# Make sure we stop if something goes wrong:
-program=${0##*/}
-trap 'echo "$program($LINENO): Command failed with error code $? ([$$] $0 $*)"; exit 1' ERR
-
-DTDIR=/a/www/ietf-datatracker/web
-cd $DTDIR/
-
-# Set up the virtual environment
-source $DTDIR/env/bin/activate
-
-logger -p user.info -t cron "Running $DTDIR/bin/mm_hourly"
-