diff --git a/build_emoji_set.py b/build_emoji_set.py
deleted file mode 100644
index dc3d2ff55..000000000
--- a/build_emoji_set.py
+++ /dev/null
@@ -1,104 +0,0 @@
-# delete dst, then:
-# copy the placeholders to dst
-# then copy the noto images to dst
-# then copy the draft images to dst, skipping names with parens and
-# after fixing the case of the names
-
-import glob
-import os
-from os import path
-import re
-import shutil
-
-DST = '/tmp/placeholder_emoji_plus'
-
-SRC_PLACEHOLDER = '/usr/local/google/users/dougfelt/emoji_images/placeholder'
-SRC_NOTO = '/usr/local/google/users/dougfelt/newnoto/noto-emoji/png/128'
-SRC_DRAFT = '/usr/local/google/users/dougfelt/emoji_images/png_thurs'
-
-# First, scan the draft images and select which ones to use.  This does
-# two things:
-# - The download package returns all the images, including previous versions.
-#   Ensure we use the one with the highest version.
-# - The names often mix case.  Make sure we have all lower case names.
-#
-# If something seems amiss, we fail.
-
-UPDATED_NAMES = {}
-FIXED_NAMES = {}
-VAR_PAT = re.compile(r'(.*?)\((\d+)\)\.png')
-for fname in glob.glob(path.join(SRC_DRAFT, '*.png')):
-  name = path.basename(fname)
-  if 'alt' in name:
-    print 'skip %s' % name
-    continue
-
-  m = VAR_PAT.match(name)
-  if m:
-    name = '%s.png' % m.group(1).lower()
-    version = int(m.group(2))
-    if version > UPDATED_NAMES.get(name, (0, None))[0]:
-      print 'update %s to version %d' % (name, version)
-      UPDATED_NAMES[name] = (version, fname)
-  else:
-    name = name.lower()
-    FIXED_NAMES[name] = fname
-
-for name in UPDATED_NAMES:
-  if name not in FIXED_NAMES:
-    raise Exception('updated name %s not in names' % name)
-  fname = UPDATED_NAMES[name][1]
-  print 'using updated image %s for %s' % (fname, name)
-  FIXED_NAMES[name] = fname
-
-EXCLUDE_PAT = re.compile(r'emoji_u1f3f[bcdef].png')
-remove = [name for name in FIXED_NAMES if EXCLUDE_PAT.match(name)]
-for name in remove:
-  print 'removing %s' % name
-  del FIXED_NAMES[name]
-
-
-# Now, recreate the destination directory and copy the data into it.
-
-if path.isdir(DST):
-  shutil.rmtree(DST)
-os.makedirs(DST)
-
-def flag_emoji_name(flag_ascii):
-  return 'emoji_u%s.png' % '_'.join(
-      '%04x' % (ord(cp) - ord('A') + 0x1f1e6) for cp in flag_ascii)
-
-SKIP_FLAGS = [flag_emoji_name(name) for name in [
-    'AC', 'AQ', 'BL', 'BQ', 'BV', 'CP', 'DG', 'EA', 'EH', 'FK',
-    'GF', 'GP', 'GS', 'HM', 'IC', 'MF', 'MQ', 'NC', 'PM', 'RE',
-    'SH', 'SJ', 'TA', 'TF', 'UM', 'WF', 'XK', 'YT',
-    ]]
-
-def emoji_name(val):
-  return 'emoji_u%04x.png' % val
-
-SKIP_SWATCHES = [emoji_name(val) for val in range(0x1f3fb, 0x1f3ff + 1)]
-
-# these are placeholders for emoji that have a single codepoint yet
-# also have a decomposition.
-# we want to use the image for the single codepoint.
-SKIP_SINGLE_CP_EMOJI = [
-  'emoji_u1f468_200d_1f469_200d_1f466.png',
-  'emoji_u1f469_200d_2764_fe0f_200d_1f468.png',
-  'emoji_u1f469_200d_2764_fe0f_200d_1f48b_200d_1f468.png',
-]
-
-SKIP_PLACEHOLDERS = frozenset(SKIP_FLAGS + SKIP_SWATCHES + SKIP_SINGLE_CP_EMOJI)
-
-for fname in sorted(glob.glob(path.join(SRC_PLACEHOLDER, '*.png'))):
-  basename = path.basename(fname)
-  if basename in SKIP_PLACEHOLDERS:
-    print 'skip placeholder %s' % basename
-    continue
-  shutil.copy(fname, DST)
-
-for fname in glob.glob(path.join(SRC_NOTO, '*.png')):
-  shutil.copy(fname, DST)
-
-for name, fname in FIXED_NAMES.iteritems():
-  shutil.copy(fname, path.join(DST, name))