Removed NewAddColumnMigration via 3473

pkg/services/sqlstore/migrator/migrations.go

@@ -64,10 +64,6 @@ type AddColumnMigration struct {
 	column    *Column
 }
 
-func NewAddColumnMigration(table Table, col *Column) *AddColumnMigration {
-	return &AddColumnMigration{tableName: table.Name, column: col}
-}
-
 func (m *AddColumnMigration) Table(tableName string) *AddColumnMigration {
 	m.tableName = tableName
 	return m