diff --git a/src/common_paths_tests.rs b/src/common_paths_tests.rs
deleted file mode 100644
index f38fd82..0000000
--- a/src/common_paths_tests.rs
+++ /dev/null
@@ -1,29 +0,0 @@
-use std::path::PathBuf;
-
-#[test]
-fn empty() {
-    assert_eq!(crate::common_parent::<PathBuf>(&[]), PathBuf::new());
-}
-
-#[test]
-fn single1() {
-    assert_eq!(crate::common_parent::<&str>(&["a"]).as_path(), "");
-}
-
-#[test]
-fn single2() {
-    assert_eq!(crate::common_parent::<&str>(&["/a"]).as_path(), "/");
-}
-
-#[test]
-fn double() {
-    assert_eq!(crate::common_parent::<&str>(&["d/a", "d/b"]).as_path(), "d");
-}
-
-#[test]
-fn dir_file() {
-    assert_eq!(
-        crate::common_parent::<&str>(&["./d", "./d/f"]).as_path(),
-        "."
-    );
-}
diff --git a/src/lib.rs b/src/lib.rs
index 6138802..b6d6f8f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,3 @@
-use std::path::Path;
 use std::{ffi::OsString, io::Read, path::PathBuf, str::FromStr, string::FromUtf8Error};
 
 use anyhow::bail;
@@ -81,27 +80,6 @@ pub fn actions_token() -> Result<SecretString, ActionsTokenError> {
     Ok(SecretString::new(str.into_boxed_str()))
 }
 
-pub fn common_parent<P: AsRef<Path>>(paths: &[P]) -> PathBuf {
-    let Some((path0, paths)) = paths.split_first() else {
-        return PathBuf::new();
-    };
-    let mut common = PathBuf::new();
-    for comp in path0.as_ref() {
-        common.push(comp);
-        if !paths.iter().all(|p| p.as_ref().starts_with(&common)) {
-            break;
-        }
-    }
-    // first path is common to all the paths, or the last component does not match all the paths
-    //
-    // either way, we need to pop a single component from the end
-    common.pop();
-    common
-}
-
-#[cfg(test)]
-mod common_paths_tests;
-
 #[derive(Debug)]
 pub struct Client {
     http_client: HttpClient,