refactor(db): adopt email settings migration

JobTrackerApi/Services/StartupInitializationExtensions.cs

@@ -1469,25 +1469,6 @@ public static class StartupInitializationExtensions
                         cmd.ExecuteNonQuery();
                     }
 
-                    if (!HasMySqlTable(conn, "SystemEmailSettings"))
-                    {
-                        using var cmd = conn.CreateCommand();
-                        cmd.CommandText = @"CREATE TABLE IF NOT EXISTS `SystemEmailSettings` (
-        `Id` int NOT NULL,
-        `Enabled` tinyint(1) NULL,
-        `SmtpHost` longtext NULL,
-        `SmtpPort` int NULL,
-        `SmtpUser` longtext NULL,
-        `SmtpPassword` longtext NULL,
-        `From` longtext NULL,
-        `FromName` longtext NULL,
-        `SmtpEnableSsl` tinyint(1) NULL,
-        `SmtpTimeoutMs` int NULL,
-        PRIMARY KEY (`Id`)
-        );";
-                        cmd.ExecuteNonQuery();
-                    }
-
                     if (!HasMySqlTable(conn, "CvUploadArtifacts"))
                     {
                         using var cmd = conn.CreateCommand();