Reduce format f2fs time

Secure block discard/trim was fixed by:
https://github.com/CyanogenMod/android_external_f2fs-tools/commit/6b39b93d83ab4ccb1913ecbc7a5a3e16766a011f

Once fixed, formatting using discard/trim takes a LONG time.  Other TWRP
formatting methods are already insecure.  It doesn't make sense for this
one type of partition to have secure wipe when none of the others do.

Change-Id: Ib5ad5a722895b0e0c7aa4e3af98b705e2574b762
diff --git a/partition.cpp b/partition.cpp
index 54bf5e1..8ddd4be 100644
--- a/partition.cpp
+++ b/partition.cpp
@@ -1862,7 +1862,7 @@
 
 		gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)("mkfs.f2fs"));
 		Find_Actual_Block_Device();
-		command = "mkfs.f2fs -t 1";
+		command = "mkfs.f2fs -t 0";
 		if (!Is_Decrypted && Length != 0) {
 			// Only use length if we're not decrypted
 			char len[32];