Remove unused code

src/calibre/libwand.py

@@ -1,55 +0,0 @@
-__license__   = 'GPL v3'
-__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
-import ctypes, os, sys
-
-from calibre import iswindows, isosx
-
-class WandException(Exception):
-    pass
-
-_lib_name = 'CORE_RL_wand_.dll' if iswindows else 'libWand.dylib' if isosx else 'libWand.so'
-if iswindows and hasattr(sys, 'frozen'):
-    im_dir = os.path.join(os.path.dirname(sys.executable), 'ImageMagick')
-    os.putenv('PATH', im_dir + ';' + os.environ['PATH'])
-_libwand = None
-try:
-    _libwand = ctypes.cdll.LoadLibrary(_lib_name)
-except:
-    pass
-
-
-
-class Severity(ctypes.c_long):
-    pass
-
-class String(ctypes.c_char_p):
-
-    def __del__(self):
-        _libwand.MagickRelinquishMemory(self)
-
-    def __str__(self):
-        return self.value
-
-if _libwand is not None:
-    _libwand.MagickGetException.argtypes = [ctypes.c_void_p, ctypes.POINTER(Severity)]
-    _libwand.MagickGetException.restype  = String
-
-def get_exception(wand):
-    severity = Severity()
-    desc = _libwand.MagickGetException(wand, ctypes.byref(severity))
-    return str(desc)
-
-def convert(source, dest):
-    if _libwand is None:
-        raise WandException('Could not find ImageMagick library')
-    if not _libwand.MagickWandGenesis():
-        raise WandException('Unable to initialize Image Magick')
-    wand = _libwand.NewMagickWand()
-    if wand <= 0:
-        raise WandException('Unable to initialize Image Magick. Cannot create wand.')
-    if not _libwand.MagickReadImage(wand, source):
-        raise WandException('Cannot read image %s: %s'%(source, get_exception(wand)))
-    if not _libwand.MagickWriteImage(wand, dest):
-        raise WandException('Cannot write image to file %s: %s'%(source, get_exception(wand)))
-    _libwand.DestroyMagickWand(wand)
-    _libwand.MagickWandTerminus()