chore: remove template occurrences

cmd/migrate/migrations/000001_create_orders_table.down.sql

@@ -1 +0,0 @@
-drop table if exists orders;

cmd/migrate/migrations/000001_create_orders_table.up.sql

@@ -1,5 +0,0 @@
-create table if not exists orders (
-    id uuid primary key,
-    item varchar(500) not null,
-    quantity integer not null check (quantity > 0)
-);