rust: alloc: cleanup doctest imports to "kernel vertical" style

Change all imports in the alloc module's doctests to use the "kernel
vertical" import style [1].

While at it, drop imports that are automatically included in doctests.

Link: https://docs.kernel.org/rust/coding-guidelines.html#imports [1]
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260513190946.619810-2-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/rust/kernel/alloc/allocator.rs b/rust/kernel/alloc/allocator.rs
index af20332d59f7..562e41925ada 100644
--- a/rust/kernel/alloc/allocator.rs
+++ b/rust/kernel/alloc/allocator.rs
@@ -174,8 +174,11 @@ impl Vmalloc {
     /// # Examples
     ///
     /// ```
-    /// # use core::ptr::{NonNull, from_mut};
-    /// # use kernel::{page, prelude::*};
+    /// # use core::ptr::{
+    /// #     from_mut,
+    /// #     NonNull, //
+    /// # };
+    /// # use kernel::page;
     /// use kernel::alloc::allocator::Vmalloc;
     ///
     /// let mut vbox = VBox::<[u8; page::PAGE_SIZE]>::new_uninit(GFP_KERNEL)?;