Update configuring-playbook-jitsi.md

matrix_jitsi_jicofo_component_secret var removed #1139

docs/configuring-playbook-jitsi.md

@@ -26,7 +26,6 @@ matrix_jitsi_enabled: true
 
 # Run `bash inventory/scripts/jitsi-generate-passwords.sh` to generate these passwords,
 # or define your own strong passwords manually.
-matrix_jitsi_jicofo_component_secret: ""
 matrix_jitsi_jicofo_auth_password: ""
 matrix_jitsi_jvb_auth_password: ""
 matrix_jitsi_jibri_recorder_password: ""