Deprecated ADD_TRY_UMOUNT in favor of official kernel_umount; Synced with the latest commit of official KernelSU main repo

- Since official KSU has exposed kernel_umount API and provided meta module for handling mount operations, susfs can finally handover try_umount and auto add_try_umount to KSU and its meta module

- Synced with upstream, see e1e58ed737

Co-authored-by: simonpunk <simonpunk2016@gmail.com>

kernel/setuid_hook.c

@@ -68,9 +68,6 @@ extern void susfs_run_sus_path_loop(uid_t uid);
 extern bool susfs_is_umount_for_zygote_iso_service_enabled;
 extern void susfs_reorder_mnt_id(void);
 #endif // #ifdef CONFIG_KSU_SUSFS_SUS_MOUNT
-#ifdef CONFIG_KSU_SUSFS_TRY_UMOUNT
-extern void susfs_try_umount(uid_t uid);
-#endif
 #endif // #ifdef CONFIG_KSU_SUSFS
 
 static bool ksu_enhanced_security_enabled = false;
@@ -297,19 +294,9 @@ int ksu_handle_setresuid(uid_t ruid, uid_t euid, uid_t suid){
 	return 0;
 
 do_umount:
-#ifndef CONFIG_KSU_SUSFS_TRY_UMOUNT
-	if (!ksu_kernel_umount_enabled || !ksu_module_mounted) {
-		goto skip_ksu_handle_umount;
-		
-	}
 	// Handle kernel umount
 	ksu_handle_umount(old_uid, new_uid);
 
-skip_ksu_handle_umount:
-#else
-    susfs_try_umount(new_uid);
-#endif // #ifndef CONFIG_KSU_SUSFS_TRY_UMOUNT
-
 	get_task_struct(current);
 
 #ifdef CONFIG_KSU_SUSFS_SUS_MOUNT