refactor: remove unused server type option

Author: scop

config.json

@@ -26,7 +26,6 @@
     },
     "email_tags": {
       "module": ["server_name", "host_name"],
-      "package": ["server_type"],
       "service": ["upcloudvps_hostname", "upcloudvps_password", "upcloudvps_ipaddress"]
     }
 }

language/en_us/upcloud.php

@@ -61,10 +61,6 @@
 $lang['Upcloudvps.!error.api.server_locked'] = 'Unable to complete action.  Server is currently locked.';
 
 // Package fields
-$lang['Upcloudvps.package_fields.server_type'] = 'Server Type';
-$lang['Upcloudvps.package_fields.server_type.baremetal'] = 'Bare Metal';
-$lang['Upcloudvps.package_fields.server_type.server'] = 'Virtual Machine';
-$lang['Upcloudvps.package_fields.baremetal_plan'] = 'Bare Metal Plan';
 $lang['Upcloudvps.package_fields.server_plan'] = 'Server Plan';
 $lang['Upcloudvps.package_fields.set_template'] = 'Set Template';
 $lang['Upcloudvps.package_fields.admin_set_template'] = 'Select a template';

upcloud.php

@@ -449,9 +449,6 @@ private function getPackageRules(&$vars)
                 ]
             ]
         ];
-        if ($vars['meta']['server_type']) {
-            unset($rules['meta[server_plan]']);
-        }
         return $rules;
     }