Fix formatting errors

Author: Greenheart

src/tutorial/testing.md

@@ -472,7 +472,7 @@ at the end of the function,
 the actual temporary file will automatically get deleted.
 
 ```rust,ignore
-{{#include testing/tests/cli.rs:17:30}}
+{{#include testing/tests/cli.rs:16:30}}
 ```
 
 <aside class="exercise">
@@ -500,7 +500,7 @@ all nested files and directories within temporary directories
 are also cleaned up after the test is completed.
 
 ```rust,ignore
-{{#include testing/tests/cli.rs:31:56}}
+{{#include testing/tests/cli.rs:32:56}}
 ```
 
 You now know the core features of the crates `assert_cmd`,

src/tutorial/testing/tests/cli.rs

@@ -1,5 +1,3 @@
-use std::path::Path;
-
 use assert_cmd::cargo::*; // Import cargo_bin_cmd! macro and methods
 use predicates::prelude::*; // Used for writing assertions