refactor: Remove migration service and migration table schema

Author: m-mdy-m

src/database/Client.ts

@@ -1,5 +1,4 @@
 import { ConnectionPool } from './ConnectionPool';
-import { MigrationService } from './service/Migration';
 import { TablesService } from './service/Tables';
 export class Client {
   private _connectionPool: ConnectionPool;
@@ -8,12 +7,6 @@ export class Client {
   }
   async initialize() {
     await this._connectionPool.connect();
-    const migrationService = new MigrationService(this._connectionPool);
-
-    console.log('Applying migrations...');
-    await migrationService.applyMigrations(); // Apply pending migrations
-    console.log('Migrations applied successfully.');
-
     const tablesService = new TablesService(this._connectionPool);
     console.log('Setting up initial tables...');
     await tablesService.initialTables();

src/database/service/Migration.ts

@@ -50,10 +50,4 @@ CREATE TABLE IF NOT EXISTS "GroupRule" (
     rule_text TEXT[],                             -- Text of the rule
     added_at TIMESTAMP DEFAULT NOW(),
     added_by BIGINT REFERENCES "User"(id)
-);
--- migration table schema
-CREATE TABLE IF NOT EXISTS "Migration" (
-  id SERIAL PRIMARY KEY,
-  name TEXT UNIQUE NOT NULL,
-  applied_at TIMESTAMP DEFAULT NOW()
 );