Refactor better-auth provider: Remove unused import for Provider to streamline code and improve clarity.

Author: Rykuno

apps/api/src/auth/better-auth.provider.ts

@@ -1,5 +1,5 @@
-import { Inject, Provider } from '@nestjs/common';
-import { Auth, betterAuth, BetterAuthOptions } from 'better-auth';
+import { Inject } from '@nestjs/common';
+import { betterAuth, BetterAuthOptions } from 'better-auth';
 import { emailOTP, openAPI } from 'better-auth/plugins';
 import { drizzleAdapter } from 'better-auth/adapters/drizzle';
 import { Cache } from '@nestjs/cache-manager';