Remove libxml2 and win_iconv sources

.gitignore

@@ -1,8 +1,11 @@
 *.ilk
 *.exp
 *.obj
+*.user
 /winbuild/msvc/Win32
 /winbuild/msvc/x64
 /winbuild/msvc/.vs
 *.pdb
-/winbuild/msvc/*.user
+/windeps.7z
+/windeps.pdbs.7z
+/winbuild/libgit2/CMakeFiles

README.md

@@ -23,10 +23,8 @@ Where are all these files from?
 - libpng - http://www.libpng.org
 - libsigc++ - https://github.com/libsigcplusplus/libsigcplusplus
 - libvorbis - https://github.com/xiph/vorbis/
-- libxml2 - http://xmlsoft.org/
 - libzlib - https://zlib.net/
 - Python - https://www.python.org
-- win_iconv - https://github.com/win-iconv/win-iconv
 - wxWidgets - https://wxwidgets.org
 
 Original licences apply.