Revert "fs: sdfat: Add config option to register sdFAT for exFAT"

This reverts commit fa11c675.

fs/sdfat/Kconfig

@@ -15,13 +15,6 @@ config SDFAT_FS
 	  To compile this as a module, choose M here: the module will be called
 	  sdfat_core and sdfat_fs.
 
-config SDFAT_USE_FOR_EXFAT
-	bool "Register sdFAT as exFAT"
-	default y
-	depends on SDFAT_FS && !EXFAT_FS
-	help
-	  If you want to register sdFAT as available for exFAT, say Y.
-
 config SDFAT_DELAYED_META_DIRTY
 	bool "Enable delayed metadata dirty"
 	default y

fs/sdfat/sdfat.c

@@ -4975,20 +4975,6 @@ static struct file_system_type sdfat_fs_type = {
 	.fs_flags    = FS_REQUIRES_DEV,
 };
 
-#ifdef CONFIG_SDFAT_USE_FOR_EXFAT
-static struct file_system_type exfat_fs_type = {
-	.owner       = THIS_MODULE,
-	.name        = "exfat",
-	.mount       = sdfat_fs_mount,
-#ifdef CONFIG_SDFAT_DBG_IOCTL
-	.kill_sb    = sdfat_debug_kill_sb,
-#else
-	.kill_sb    = kill_block_super,
-#endif /* CONFIG_SDFAT_DBG_IOCTL */
-	.fs_flags    = FS_REQUIRES_DEV,
-};
-#endif /* CONFIG_SDFAT_USE_FOR_EXFAT */
-
 static int __init init_sdfat_fs(void)
 {
 	int err;
@@ -5027,14 +5013,6 @@ static int __init init_sdfat_fs(void)
 		goto error;
 	}
 
-#ifdef CONFIG_SDFAT_USE_FOR_EXFAT
-	err = register_filesystem(&exfat_fs_type);
-	if (err) {
-		pr_err("[SDFAT] failed to register for exfat filesystem\n");
-		goto error;
-	}
-#endif /* CONFIG_SDFAT_USE_FOR_EXFAT */
-
 	return 0;
 error:
 	sdfat_statistics_uninit();
@@ -5064,9 +5042,7 @@ static void __exit exit_sdfat_fs(void)
 
 	sdfat_destroy_inodecache();
 	unregister_filesystem(&sdfat_fs_type);
-#ifdef CONFIG_SDFAT_USE_FOR_EXFAT
-	unregister_filesystem(&exfat_fs_type);
-#endif /* CONFIG_SDFAT_USE_FOR_EXFAT */
+
 	fsapi_shutdown();
 }