Revert debug commits

Revert "Omit to check the screenshot existence"

This reverts commit c6d3e4847950c778bfb6b6efe3a9ff566c561d19.

Revert "Show a message when the screenshot not exist"

This reverts commit dd12f039fc8b2d289b9435107ac53a441ef317e5.

Revert "Always take a screenshot"

This reverts commit b13619f5950fa2b6118dd79c012ba5af94008d6a.

Revert "Missing -F"

This reverts commit 6e723b28def4022c71d5d65b7f4a8712853b699e.

Revert "Specify the scheme"

This reverts commit 9a11bbe118d42d98c7212d9328d5516ed25481c9.

Revert "Take a screenshot and upload it on Gyazo"

This reverts commit eeb898aecac56e212df83bb0e6929c8acd9cda5a.

Revert "Execute login action within the example block"

This reverts commit 8b2ec4084e814f64cb64180c2449d10a2c0901b5.