Which detail about the god woden might the author of this passage have deleted without sacrificing essential information?

Woden's horse had eight feet

Explanation:

Because this information is irrelevant and can be deleted from the text without disrupting the main ideas.

To decide whether to secede from the United States

Explanation:

The leaders of the South Carolina Ordinance of Secession of 1860 convention meet "to decide whether to secede from the United States."

This is evident in the fact that few days after the election of Abraham Lincoln, the South Carolina legislature called a convention that took place in Charleston, and eventually, on December 20, 1860, the convention agreed without opposition to secede from the United States.