Simplify expire script

src/freedombone-app-pleroma

     echo 'if [[ "$plmonths" == "0" ]]; then' >> $pleroma_expire_posts_script
     echo '    exit 2' >> $pleroma_expire_posts_script
     echo 'fi' >> $pleroma_expire_posts_script
-    echo -n 'oldate=$(date +%Y-%m-%d --date="' >> $pleroma_expire_posts_script
-    echo -n "$PLEROMA_EXPIRE_MONTHS" >> $pleroma_expire_posts_script
-    echo ' months ago")' >> $pleroma_expire_posts_script
+    echo 'oldate=$(date +%Y-%m-%d --date="$plmonths months ago")' >> $pleroma_expire_posts_script
+    echo 'cd /etc/postgresql' >> $pleroma_expire_posts_script
     echo "sudo -u postgres psql -d pleroma -c \"DELETE FROM notifications WHERE inserted_at <= '\$oldate 01:01:01'\"" >> $pleroma_expire_posts_script
     echo "sudo -u postgres psql -d pleroma -c \"DELETE FROM objects WHERE inserted_at <= '\$oldate 01:01:01'\"" >> $pleroma_expire_posts_script
     chmod +x $pleroma_expire_posts_script
     pleroma_expire_script=/etc/cron.daily/pleroma-expire
     echo '#!/bin/bash' > $pleroma_expire_script
     echo "find /etc/pleroma/uploads/* -mtime +${expire_days_files} -exec rm -rf {} +" >> $pleroma_expire_script
-    echo "$pleroma_expire_posts_script" >> $pleroma_expire_script
+    echo "$pleroma_expire_posts_script 2> /dev/null" >> $pleroma_expire_script
     chmod +x $pleroma_expire_script
 
     # remove any old cron job