[hw-8] attempt to fix tests

comments/db/migrations/00001_create_comments.sql

@@ -1,6 +1,6 @@
 -- +goose Up
 CREATE TABLE comments (
-  id          BIGSERIAL PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   user_id     BIGINT NOT NULL,
   sku         BIGINT NOT NULL,
   text        VARCHAR(255) NOT NULL,
@@ -12,5 +12,3 @@ CREATE INDEX user_id_idx ON comments(user_id, created_at DESC);
 
 -- +goose Down
 DROP TABLE comments;
-DROP INDEX sku_idx;
-DROP INDEX user_id_idx;