removing rw access to cache dir in uv pip install

backend/windmill-worker/nsjail/download.py.config.proto

@@ -74,12 +74,6 @@ mount {
     is_bind: true
 }
 
-mount {
-    src: "{CACHE_DIR}"
-    dst: "{CACHE_DIR}"
-    is_bind: true
-    rw: true
-}
 mount {
     src: "{PY_INSTALL_DIR}"
     dst: "{PY_INSTALL_DIR}"

backend/windmill-worker/src/python_executor.rs

@@ -1936,14 +1936,6 @@ pub async fn handle_python_reqs(
             })
             .replace("{WORKER_DIR}", &worker_dir)
             .replace("{PY_INSTALL_DIR}", &PY_INSTALL_DIR)
-            .replace(
-                "{CACHE_DIR}",
-                &(if no_uv_install {
-                    PIP_CACHE_DIR.to_owned()
-                } else {
-                    py_version.to_cache_dir()
-                }),
-            )
             .replace("{CLONE_NEWUSER}", &(!*DISABLE_NUSER).to_string()),
         )?;
     };