third_party: Remove zlib from third_party

We require zlib 1.2.3.

We stopped requring a patched zlib with 5631a1b9bc03d6cf31af66b13872255f18979fe8

As discussed on samba-technical here:

https://lists.samba.org/archive/samba-technical/2019-May/133476.html

In short, zlib contains some (old, now broken) crypto code that while not compiled
in Samba is best left out of our tarball to ease crypto audits.  It is also very
very out of date and is a slightly modified copy of something otherwise very
likely available on our supported host OSs.  It would be strange to say that
GnuTLS and dependencies are an acceptable burden to install but say zlib is
a step to far.

So it is removed from Samba's third_party with this commit.

The diff between zlib in Samba and official zlib 1.2.3 is included
in third_party/zlib/last-samba-from-1.2.3.diff

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>

1 files changed, 0 insertions, 156 deletions

diff --git a/third_party/zlib/contrib/ada/read.adb b/third_party/zlib/contrib/ada/read.adb
deleted file mode 100644
index 1f2efbfeb80..00000000000
--- a/third_party/zlib/contrib/ada/read.adb
+++ /dev/null
@@ -1,156 +0,0 @@
-----------------------------------------------------------------
---  ZLib for Ada thick binding.                               --
---                                                            --
---  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
---                                                            --
---  Open source license information is in the zlib.ads file.  --
-----------------------------------------------------------------
-
---  $Id: read.adb,v 1.8 2004/05/31 10:53:40 vagul Exp $
-
---  Test/demo program for the generic read interface.
-
-with Ada.Numerics.Discrete_Random;
-with Ada.Streams;
-with Ada.Text_IO;
-
-with ZLib;
-
-procedure Read is
-
-   use Ada.Streams;
-
-   ------------------------------------
-   --  Test configuration parameters --
-   ------------------------------------
-
-   File_Size   : Stream_Element_Offset := 100_000;
-
-   Continuous  : constant Boolean          := False;
-   --  If this constant is True, the test would be repeated again and again,
-   --  with increment File_Size for every iteration.
-
-   Header      : constant ZLib.Header_Type := ZLib.Default;
-   --  Do not use Header other than Default in ZLib versions 1.1.4 and older.
-
-   Init_Random : constant := 8;
-   --  We are using the same random sequence, in case of we catch bug,
-   --  so we would be able to reproduce it.
-
-   -- End --
-
-   Pack_Size : Stream_Element_Offset;
-   Offset    : Stream_Element_Offset;
-
-   Filter     : ZLib.Filter_Type;
-
-   subtype Visible_Symbols
-      is Stream_Element range 16#20# .. 16#7E#;
-
-   package Random_Elements is new
-      Ada.Numerics.Discrete_Random (Visible_Symbols);
-
-   Gen : Random_Elements.Generator;
-   Period  : constant Stream_Element_Offset := 200;
-   --  Period constant variable for random generator not to be very random.
-   --  Bigger period, harder random.
-
-   Read_Buffer : Stream_Element_Array (1 .. 2048);
-   Read_First  : Stream_Element_Offset;
-   Read_Last   : Stream_Element_Offset;
-
-   procedure Reset;
-
-   procedure Read
-     (Item : out Stream_Element_Array;
-      Last : out Stream_Element_Offset);
-   --  this procedure is for generic instantiation of
-   --  ZLib.Read
-   --  reading data from the File_In.
-
-   procedure Read is new ZLib.Read
-                           (Read,
-                            Read_Buffer,
-                            Rest_First => Read_First,
-                            Rest_Last  => Read_Last);
-
-   ----------
-   -- Read --
-   ----------
-
-   procedure Read
-     (Item : out Stream_Element_Array;
-      Last : out Stream_Element_Offset) is
-   begin
-      Last := Stream_Element_Offset'Min
-               (Item'Last,
-                Item'First + File_Size - Offset);
-
-      for J in Item'First .. Last loop
-         if J < Item'First + Period then
-            Item (J) := Random_Elements.Random (Gen);
-         else
-            Item (J) := Item (J - Period);
-         end if;
-
-         Offset   := Offset + 1;
-      end loop;
-   end Read;
-
-   -----------
-   -- Reset --
-   -----------
-
-   procedure Reset is
-   begin
-      Random_Elements.Reset (Gen, Init_Random);
-      Pack_Size := 0;
-      Offset := 1;
-      Read_First := Read_Buffer'Last + 1;
-      Read_Last  := Read_Buffer'Last;
-   end Reset;
-
-begin
-   Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
-
-   loop
-      for Level in ZLib.Compression_Level'Range loop
-
-         Ada.Text_IO.Put ("Level ="
-            & ZLib.Compression_Level'Image (Level));
-
-         --  Deflate using generic instantiation.
-
-         ZLib.Deflate_Init
-               (Filter,
-                Level,
-                Header => Header);
-
-         Reset;
-
-         Ada.Text_IO.Put
-           (Stream_Element_Offset'Image (File_Size) & " ->");
-
-         loop
-            declare
-               Buffer : Stream_Element_Array (1 .. 1024);
-               Last   : Stream_Element_Offset;
-            begin
-               Read (Filter, Buffer, Last);
-
-               Pack_Size := Pack_Size + Last - Buffer'First + 1;
-
-               exit when Last < Buffer'Last;
-            end;
-         end loop;
-
-         Ada.Text_IO.Put_Line (Stream_Element_Offset'Image (Pack_Size));
-
-         ZLib.Close (Filter);
-      end loop;
-
-      exit when not Continuous;
-
-      File_Size := File_Size + 1;
-   end loop;
-end Read;