bitbox02_rust: drop sdcard::UserAbort for hal::ui::UserAbort

diff --git a/src/rust/bitbox02-rust/src/hal/bitbox02/ui.rs b/src/rust/bitbox02-rust/src/hal/bitbox02/ui.rs
index fad06ac..30379cd 100644
--- a/src/rust/bitbox02-rust/src/hal/bitbox02/ui.rs
+++ b/src/rust/bitbox02-rust/src/hal/bitbox02/ui.rs
@@ -4,7 +4,7 @@ use alloc::string::String;
 
 use crate::hal::Ui;
 use crate::hal::ui::UserAbort;
-use crate::workflow::{confirm, sdcard, trinary_input_string};
+use crate::workflow::{confirm, trinary_input_string};
 
 pub struct BitBox02Ui;
 
@@ -60,10 +60,10 @@ impl Ui for BitBox02Ui {
     }
 
     #[inline(always)]
-    async fn insert_sdcard(&mut self) -> Result<(), sdcard::UserAbort> {
+    async fn insert_sdcard(&mut self) -> Result<(), UserAbort> {
         match bitbox02::ui::sdcard().await {
             bitbox02::ui::SdcardResponse::Inserted => Ok(()),
-            bitbox02::ui::SdcardResponse::Cancelled => Err(sdcard::UserAbort),
+            bitbox02::ui::SdcardResponse::Cancelled => Err(UserAbort),
         }
     }
 
diff --git a/src/rust/bitbox02-rust/src/hal/testing/ui.rs b/src/rust/bitbox02-rust/src/hal/testing/ui.rs
index 37870ac..7e1461c 100644
--- a/src/rust/bitbox02-rust/src/hal/testing/ui.rs
+++ b/src/rust/bitbox02-rust/src/hal/testing/ui.rs
@@ -2,7 +2,7 @@
 
 use crate::hal::Ui;
 use crate::hal::ui::UserAbort;
-use crate::workflow::{confirm, sdcard, trinary_input_string};
+use crate::workflow::{confirm, trinary_input_string};
 
 use alloc::boxed::Box;
 use alloc::string::String;
@@ -123,7 +123,7 @@ impl Ui for TestingUi<'_> {
         self._enter_string.as_mut().unwrap()(params).map(zeroize::Zeroizing::new)
     }
 
-    async fn insert_sdcard(&mut self) -> Result<(), sdcard::UserAbort> {
+    async fn insert_sdcard(&mut self) -> Result<(), UserAbort> {
         Ok(())
     }
 
diff --git a/src/rust/bitbox02-rust/src/hal/ui.rs b/src/rust/bitbox02-rust/src/hal/ui.rs
index 5ce01f3..53dbe3c 100644
--- a/src/rust/bitbox02-rust/src/hal/ui.rs
+++ b/src/rust/bitbox02-rust/src/hal/ui.rs
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::workflow::{confirm, mnemonic, sdcard, trinary_input_string};
+use crate::workflow::{confirm, mnemonic, trinary_input_string};
 
 use alloc::string::String;
 
@@ -32,7 +32,7 @@ pub trait Ui {
         preset: &str,
     ) -> Result<zeroize::Zeroizing<String>, UserAbort>;
 
-    async fn insert_sdcard(&mut self) -> Result<(), sdcard::UserAbort>;
+    async fn insert_sdcard(&mut self) -> Result<(), UserAbort>;
 
     /// Returns the index of the word chosen by the user.
     async fn menu(&mut self, words: &[&str], title: Option<&str>) -> Result<u8, UserAbort>;
diff --git a/src/rust/bitbox02-rust/src/hww/api/error.rs b/src/rust/bitbox02-rust/src/hww/api/error.rs
index ac456c6..e08692b 100644
--- a/src/rust/bitbox02-rust/src/hww/api/error.rs
+++ b/src/rust/bitbox02-rust/src/hww/api/error.rs
@@ -62,12 +62,6 @@ impl core::convert::From<crate::hal::ui::UserAbort> for Error {
     }
 }
 
-impl core::convert::From<crate::workflow::sdcard::UserAbort> for Error {
-    fn from(_error: crate::workflow::sdcard::UserAbort) -> Self {
-        Error::UserAbort
-    }
-}
-
 impl core::convert::From<crate::workflow::verify_message::Error> for Error {
     fn from(error: crate::workflow::verify_message::Error) -> Self {
         match error {
diff --git a/src/rust/bitbox02-rust/src/workflow.rs b/src/rust/bitbox02-rust/src/workflow.rs
index 3939396..dbc08df 100644
--- a/src/rust/bitbox02-rust/src/workflow.rs
+++ b/src/rust/bitbox02-rust/src/workflow.rs
@@ -9,7 +9,6 @@ pub mod mnemonic;
 pub mod orientation_screen;
 pub mod pairing;
 pub mod password;
-pub mod sdcard;
 pub mod transaction;
 pub mod trinary_input_string;
 pub mod unlock;
diff --git a/src/rust/bitbox02-rust/src/workflow/sdcard.rs b/src/rust/bitbox02-rust/src/workflow/sdcard.rs
deleted file mode 100644
index fa64f80..0000000
--- a/src/rust/bitbox02-rust/src/workflow/sdcard.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-
-pub struct UserAbort;