remove non-existing working dir from systemd config

Cargo.lock

@@ -53,7 +53,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "cleanup-meeting-data"
-version = "0.2.2"
+version = "0.2.3"
 dependencies = [
  "lazy_static",
  "regex",

Cargo.toml

 [package]
 name = "cleanup-meeting-data"
-version = "0.2.2"
+version = "0.2.3"
 authors = ["Johannes <johannes@senfcall.de>"]
 edition = "2018"
 

cleanup-meeting-data.service

@@ -4,4 +4,3 @@ Description=clean up stale meeting data from /var/bigbluebutton
 [Service]
 Type=oneshot
 ExecStart=/usr/bin/cleanup-meeting-data
-WorkingDirectory=/etc/cleanup-meeting-data/