Update init.yml

Removed a set_facts that I have used for tracing down the issue

roles/matrix-bridge-mautrix-whatsapp/tasks/init.yml

@@ -2,10 +2,6 @@
     matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-mautrix-whatsapp'] }}"
   when: matrix_mautrix_whatsapp_enabled|bool
 
-- set_fact:
-    matrix_synapse_mautrix_extra_arguments: "--mount type=bind,src={{ matrix_mautrix_whatsapp_config_path }}/registration.yaml,dst=/matrix-mautrix-whatsapp-registration.yaml,ro"
-  when: matrix_mautrix_whatsapp_enabled|bool
-
 # If the matrix-synapse role is not used, these variables may not exist.
 - set_fact:
     matrix_synapse_container_extra_arguments: >