fs: ext4: Remove unused parameter from ext4_mount

The part_length parameter is not used. Remove it.

Signed-off-by: Sean Anderson <seanga2@gmail.com>

include/ext4fs.h

@@ -147,7 +147,7 @@ int ext4fs_create_link(const char *target, const char *fname);
 struct ext_filesystem *get_fs(void);
 int ext4fs_open(const char *filename, loff_t *len);
 int ext4fs_read(char *buf, loff_t offset, loff_t len, loff_t *actread);
-int ext4fs_mount(unsigned part_length);
+int ext4fs_mount(void);
 void ext4fs_close(void);
 void ext4fs_reinit_global(void);
 int ext4fs_ls(const char *dirname);