fix(comment): review suggestion

Co-authored-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Siddharth Priya <s2priya@uwaterloo.ca>

Author: priyasiddharth

virtio-queue/Cargo.toml

@@ -26,7 +26,7 @@ memoffset = "0.9.0"
 # The following deps are needed only under kani
 [target.'cfg(kani)'.dependencies]
 libc = "0.2.161"
-vm-memory = { workspace = true, features = ["backend-mmap", "backend-bitmap", "backend-atomic"] }
+vm-memory = { workspace = true, features = ["backend-mmap"] }
 
 [[bench]]
 name = "main"