delete bogus cargo doc

crates/wasi/src/preview2/error.rs

@@ -1,12 +1,3 @@
-//! wasi-common uses an [`Error`] type which represents either a preview 1 [`Errno`] enum, on
-//! [`anyhow::Error`] for trapping execution.
-//!
-//! The user can construct an [`Error`] out of an [`Errno`] using the `From`/`Into` traits.
-//! They may also use [`Error::trap`] to construct an error that traps execution. The contents
-//! can be inspected with [`Error::downcast`] and [`Error::downcast_ref`]. Additional context
-//! can be provided with the [`Error::context`] method. This context is only observable with the
-//! `Display` and `Debug` impls of the error.
-
 use std::fmt;
 
 /// An error returned from the `proc_exit` host syscall.