pygrub/fsimage: drop unused struct

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

tools/pygrub/src/fsimage/fsimage.c

@@ -43,13 +43,6 @@ typedef struct fsimage_file {
 	fsi_file_t *file;
 } fsimage_file_t;
 
-struct foo {
-	int ref;
-	int size;
-	long hash;
-	int state;
-};
-
 static PyObject *
 fsimage_file_read(fsimage_file_t *file, PyObject *args, PyObject *kwargs)
 {