srcset attribute can be overridden but not prevented

[desrosj]

In wp_get_attachment_image(), a srcset attribute can be passed to the fourth parameter to override the attribute's contents. There is no way to prevent this attribute from showing, though. An empty srcset attribute throws a validation error.

[desrosj]

Of note, the srcset can be removed with the wp_get_attachment_image_attributes filter. But, that is not ideal.

My use case: I am generating a <picture> element fallback <img /> that can't have srcset or sizes attributes.