code clean up

Author: damienbod

aspnetcore/security/authentication/configure-jwt-bearer-authentication/sample/JwtBearer/Program.cs

@@ -1,8 +1,5 @@
 
 using Microsoft.AspNetCore.Authentication.JwtBearer;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.Extensions.Options;
-using Microsoft.IdentityModel.Tokens;
 
 namespace JwtBearer;