Revert "Add NTFS support in vold"

This reverts commit 564f6c649a6cbcc34fec65b19f31a978709ba210.

Reason for revert: Un-backporting.

Note: This is not a direct revert. We should keep the minor refactoring
in PublicVolume.cpp; no point making the code worse.

Test: Revert.
Change-Id: Ic03ed25ad15a2da974921542a20cd27224347f68
diff --git a/main.cpp b/main.cpp
index 50a02ae..b07ee68 100644
--- a/main.cpp
+++ b/main.cpp
@@ -74,8 +74,7 @@
     LOG(DEBUG) << "Detected support for:"
                << (android::vold::IsFilesystemSupported("ext4") ? " ext4" : "")
                << (android::vold::IsFilesystemSupported("f2fs") ? " f2fs" : "")
-               << (android::vold::IsFilesystemSupported("vfat") ? " vfat" : "")
-               << (android::vold::IsFilesystemSupported("ntfs3") ? " ntfs3" : "");
+               << (android::vold::IsFilesystemSupported("vfat") ? " vfat" : "");
 
     VolumeManager* vm;
     NetlinkManager* nm;