LibPartition: Migrate from DeprecatedFile to File

The implemented cloning mechanism should be sound:
- If a PartitionTable is passed a File with
  ShouldCloseFileDescriptor::Yes, then it will keep it alive until the
  PartitionTable is destroyed.
- If a PartitionTable is passed a File with
  ShouldCloseFileDescriptor::No, then the caller has to ensure that the
  file descriptor remains alive.
If the caller is EBRPartitionTable, the same consideration holds.
If the caller is PartitionEditor::PartitionModel, this is satisfied by
keeping an OwnPtr<Core::File> around which is the originally opened
file.

Therefore, we never leak any fds, and never access a Core::File or fd
after destroying it.

Userland/Libraries/LibPartition/PartitionTable.cpp

@@ -7,25 +7,15 @@
 #include <LibPartition/PartitionTable.h>
 
 #ifndef KERNEL
-#    include <LibCore/DeprecatedFile.h>
 #    include <sys/ioctl.h>
 #endif
 
 namespace Partition {
 
-#ifdef KERNEL
-PartitionTable::PartitionTable(Kernel::StorageDevice& device)
-    : m_device(device)
-    , m_block_size(device.block_size())
+PartitionTable::PartitionTable(PartitionableDevice&& device)
+    : m_device(move(device))
 {
 }
-#else
-PartitionTable::PartitionTable(NonnullRefPtr<Core::DeprecatedFile> device_file)
-    : m_device_file(device_file)
-{
-    VERIFY(ioctl(m_device_file->leak_fd(), STORAGE_DEVICE_GET_BLOCK_SIZE, &m_block_size) >= 0);
-}
-#endif
 
 Optional<DiskPartitionMetadata> PartitionTable::partition(unsigned index) const
 {