Uninstall unused mail modules (goes with config snapshot just committed)

config/sync/core.extension.yml

@@ -96,7 +96,6 @@ module:
   link: 0
   locale: 0
   mailchimp: 0
-  mailsystem: 0
   markdown: 0
   menu_block: 0
   menu_trail_by_path: 0
@@ -134,7 +133,6 @@ module:
   skins: 0
   social_media_links: 0
   statistics: 0
-  swiftmailer: 0
   syslog: 0
   system: 0
   taxonomy: 0

config/sync/swiftmailer.message.yml

@@ -1,7 +0,0 @@
-format: text/html
-filter_format: plain_text
-respect_format: false
-convert_mode: false
-character_set: UTF-8
-_core:
-  default_config_hash: cMBhfAJB7-sK5yjwcEvT-QkAPFfTj2jEPpjlB5qlXW8

config/sync/swiftmailer.transport.yml

@@ -1,17 +0,0 @@
-transport: native
-smtp_host: 127.0.0.1
-smtp_port: 25
-smtp_encryption: ''
-smtp_credential_provider: swiftmailer
-smtp_credentials:
-  swiftmailer:
-    username: ''
-    password: ''
-  key:
-    username: ''
-    password: ''
-sendmail_path: /usr/sbin/sendmail
-sendmail_mode: bs
-spool_directory: ''
-_core:
-  default_config_hash: 0dJfQivKgyEp-S8D6gSRTBbpRFApE3VkpltnPMBQ5OY

config/sync/system.mail.yml

@@ -1,4 +1,5 @@
 interface:
   default: php_mail
+  webform: webform_php_mail
 _core:
   default_config_hash: rYgt7uhPafP2ngaN_ZUPFuyI4KdE0zU868zLNSlzKoE