Function remove 

pub fn remove(
    ctx: &Context,
    req: RemoveRequest,
) -> Result<Outcome<PantryContents>, CoreError>

Take an item out of the pantry and write it back.

A section left with no items is removed too, because cooklang drops empty sections when it reads a file and keeping one would not survive the next read anyway.

Returns the pantry as it now stands on disk, and any warnings from parsing what was there before.

Only the entry asked for is touched; see what a write touches.

Errors

• CoreError::MissingConfig if the context carries no pantry: there is nothing to take an item out of. Unlike add, this does not create one.
• CoreError::ReadOnlyConfig if it carries the pantry inline.
• CoreError::PantryEdit if there is no such section, or no such item in it. Nothing is written.
• As load otherwise, plus CoreError::Io if the file cannot be written.