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diff --git a/src/docs/result_unit_err.txt b/src/docs/result_unit_err.txt
deleted file mode 100644
index 7c8ec2ffcf9..00000000000
--- a/src/docs/result_unit_err.txt
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@@ -1,40 +0,0 @@
-### What it does
-Checks for public functions that return a `Result`
-with an `Err` type of `()`. It suggests using a custom type that
-implements `std::error::Error`.
-
-### Why is this bad?
-Unit does not implement `Error` and carries no
-further information about what went wrong.
-
-### Known problems
-Of course, this lint assumes that `Result` is used
-for a fallible operation (which is after all the intended use). However
-code may opt to (mis)use it as a basic two-variant-enum. In that case,
-the suggestion is misguided, and the code should use a custom enum
-instead.
-
-### Examples
-```
-pub fn read_u8() -> Result<u8, ()> { Err(()) }
-```
-should become
-```
-use std::fmt;
-
-#[derive(Debug)]
-pub struct EndOfStream;
-
-impl fmt::Display for EndOfStream {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "End of Stream")
-    }
-}
-
-impl std::error::Error for EndOfStream { }
-
-pub fn read_u8() -> Result<u8, EndOfStream> { Err(EndOfStream) }
-```
-
-Note that there are crates that simplify creating the error type, e.g.
-[`thiserror`](https://docs.rs/thiserror).
\ No newline at end of file