[gparted] Remove virtual PartitionLUKS::get_filesystem_label() (#774818)

[Curtis Gedak <gedakc src gnome org>]

commit aa49b763e4e65da04e9d2059aa00470095bd5af7
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Thu Sep 8 16:00:01 2016 +0100

    Remove virtual PartitionLUKS::get_filesystem_label() (#774818)
    
    The previous commit changed how the code behind the main window
    retrieved the file system label for display.  This is the relevant
    changes in TreeView_Detail::create_row():
    
      + const Partition & filesystem_ptn = partition.get_filesystem_partition();
        ...
      - Glib::ustring temp_filesystem_label = partition.get_filesystem_label();
      + Glib::ustring temp_filesystem_label = filesystem_ptn.get_filesystem_label();
        treerow[treeview_detail_columns.label] = temp_filesystem_label;
    
    In the case of an encrypted file system get_filesystem_label() is now
    called on the Partition object directly rather than on the outer
    Partition object containing the LUKS encryption.
    
    The code behind the Information dialog always obtained and used the
    Partition object directly containing the file system to call
    get_filesystem_label() since read-only LUKS support was added.
    Therefore the virtualised PartitionLUKS::get_filesystem_label() is no
    longer needed, so remove it.
    
    Bug 774818 - Implement LUKS read-write actions NOT requiring a
                 passphrase

 include/Partition.h     |    2 +-
 include/PartitionLUKS.h |    1 -
 src/PartitionLUKS.cc    |    8 --------
 3 files changed, 1 insertions(+), 10 deletions(-)
---
diff --git a/include/Partition.h b/include/Partition.h
index 1f89397..8078dd1 100644
--- a/include/Partition.h
+++ b/include/Partition.h
@@ -113,7 +113,7 @@ public:
        Sector get_sector() const ;
        bool test_overlap( const Partition & partition ) const ;
        bool filesystem_label_known() const;
-       virtual Glib::ustring get_filesystem_label() const;
+       Glib::ustring get_filesystem_label() const;
        void set_filesystem_label( const Glib::ustring & filesystem_label );
 
        // Message accessors.  Messages are stored locally and accessed globally.
diff --git a/include/PartitionLUKS.h b/include/PartitionLUKS.h
index feb9bd3..65c4277 100644
--- a/include/PartitionLUKS.h
+++ b/include/PartitionLUKS.h
@@ -48,7 +48,6 @@ public:
        virtual Sector get_sectors_used() const;
        virtual Sector get_sectors_unused() const;
        virtual Sector get_sectors_unallocated() const;
-       virtual Glib::ustring get_filesystem_label() const;
        virtual bool have_messages() const;
        virtual std::vector<Glib::ustring> get_messages() const;
        virtual void clear_messages();
diff --git a/src/PartitionLUKS.cc b/src/PartitionLUKS.cc
index c16fd79..72c45bb 100644
--- a/src/PartitionLUKS.cc
+++ b/src/PartitionLUKS.cc
@@ -168,14 +168,6 @@ Sector PartitionLUKS::get_sectors_unallocated() const
        return Partition::get_sectors_unallocated();
 }
 
-// Return the label of the encrypted file system within, or "" if no open mapping.
-Glib::ustring PartitionLUKS::get_filesystem_label() const
-{
-       if ( busy )
-               return encrypted.get_filesystem_label();
-       return "";
-}
-
 bool PartitionLUKS::have_messages() const
 {
        if ( busy )