1 files changed, 0 insertions, 29 deletions
diff --git a/src/docs/mut_mutex_lock.txt b/src/docs/mut_mutex_lock.txt
deleted file mode 100644
index 5e9ad8a3f17..00000000000
--- a/src/docs/mut_mutex_lock.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-### What it does
-Checks for `&mut Mutex::lock` calls
-
-### Why is this bad?
-`Mutex::lock` is less efficient than
-calling `Mutex::get_mut`. In addition you also have a statically
-guarantee that the mutex isn't locked, instead of just a runtime
-guarantee.
-
-### Example
-```
-use std::sync::{Arc, Mutex};
-
-let mut value_rc = Arc::new(Mutex::new(42_u8));
-let value_mutex = Arc::get_mut(&mut value_rc).unwrap();
-
-let mut value = value_mutex.lock().unwrap();
-*value += 1;
-```
-Use instead:
-```
-use std::sync::{Arc, Mutex};
-
-let mut value_rc = Arc::new(Mutex::new(42_u8));
-let value_mutex = Arc::get_mut(&mut value_rc).unwrap();
-
-let value = value_mutex.get_mut().unwrap();
-*value += 1;
-```
\ No newline at end of file