synapse: Remove group variables

This was the last group that had an entire file encrypted with Ansible
Vault.  Now that the Synapse server is long gone, rather than convert it
to having individually-encrypted values, we can get rid of it entirely.

group_vars/synapse/main.yml

@@ -1,17 +0,0 @@
-apache_default_ssl_vhost: false
-matrix_server_name: hatch.chat
-synapse_ldap_enabled: true
-synapse_ldap_uri: ldap://ldap.pyrocufflink.blue:389
-synapse_ldap_base: DC=pyrocufflink,DC=blue
-synapse_ldap_bind_dn: CN=svc.synapse,CN=Users,DC=pyrocufflink,DC=blue
-synapse_ldap_bind_password: '{{ vault_synapse_ldap_bind_password }}'
-matrix_tls_cert: websites/hatch.chat.cer
-matrix_tls_key: websites/hatch.chat.key
-
-burp_backup_script_pre: /etc/burp/backup-pre.sh
-burp_restore_script_post: /etc/burp/restore-post.sh
-burp_backup:
-- include: /var/lib/synapse
-- exclude: /var/lib/synapse/homeserver.db
-- exclude: /var/lib/synapse/homeserver.db-shm
-- exclude: /var/lib/synapse/homeserver.db-wal

group_vars/synapse/secrets

@@ -1,9 +0,0 @@
-$ANSIBLE_VAULT;1.1;AES256
-63353463626538346438303931303537663265346634313861653364333635323337666634303136
-3036343162343532306263653634376132663836393962640a623738393633336437643330656264
-66633166306532373631323236346237626239643839313934383264393231313134323761313163
-6464626566623466630a313363386332613637346638333439666438383939306632666466353966
-30323538326462313836306563353233663935636130636361353938623331396432356436383137
-30336464646136633931613763363464373165386435613939656435663332326432396539633037
-30373035663336613937383038363032373330316137333333303632353839643338393938343238
-34393634643139323066