If you do not wish to use two-step verification when signing in to your Yahoo account, you can disable this feature in your account settings. Please follow these steps to turn off two-step verification:
1. Sign in to your Yahoo account.
2. Click on your profile icon located on the top right corner of the screen and select "Account Info".
3. Next, click on "Account Security".
4. Scroll down to the "Two-step verification" section and click on "Turn Off".
5. Follow the on-screen instructions to confirm your action.
Please note that disabling two-step verification may put your account at a higher risk of being hacked or compromised. Therefore, it is recommended that you keep this feature enabled or use alternative security measures to protect your Yahoo account.