feat: restore unique index on stats_requests and remove visitor_logs table definition

Author: pphatdev

drizzle/0002_stats_requests.sql

@@ -5,13 +5,4 @@ CREATE TABLE `stats_requests` (
 	`created_at` integer
 );
 --> statement-breakpoint
-CREATE UNIQUE INDEX `uq_stats_request_url` ON `stats_requests` (`url`);--> statement-breakpoint
-CREATE TABLE `visitor_logs` (
-	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
-	`username` text NOT NULL,
-	`ip_hash` text NOT NULL,
-	`visit_date` text NOT NULL,
-	`created_at` integer
-);
---> statement-breakpoint
-CREATE UNIQUE INDEX `uq_visitor_log` ON `visitor_logs` (`username`,`ip_hash`,`visit_date`);
+CREATE UNIQUE INDEX `uq_stats_request_url` ON `stats_requests` (`url`);--> statement-breakpoint