Remove building llvm2ice.build_atts from Subzero build.

pydir/ifatts.py

-#!/usr/bin/env python2
-
-import argparse
-import os
-import sys
-
-from utils import shellcmd
-
-def GetFileAttributes(Filename):
-  """Returns the set of names contained in file named Filename.
-  """
-  if not os.path.isfile(Filename):
-    raise RuntimeError("Can't open: %s" % Filename)
-  with open(Filename, 'r') as f:
-    return f.read().split()
-
-def HasFileAttributes(Filename, Attributes):
-  """Returns true if the set of names in Attributes also appear
-     in the set of names contained in file named Filename.
-  """
-  return set(Attributes) <= set(GetFileAttributes(Filename))
-
-def main():
-  """Run the specified command only if attributes are defined.
-
-     Check if the fset of attributes (i.e. names), contained in FILE,
-     contains the attributes defined by --att=ATTRIBUTE arguments. If
-     so, runs in a shell the command defined by the remaining
-     arguments.
-  """
-  argparser = argparse.ArgumentParser(
-    description='    ' + main.__doc__,
-    formatter_class=argparse.ArgumentDefaultsHelpFormatter)
-  argparser.add_argument('file', metavar='FILE',
-                         help='File defining attributes to check against.')
-  argparser.add_argument('--att', required=False, default=[],
-                         action='append', metavar='ATTRIBUTE',
-                         help='Attribute to check. May be repeated.')
-  argparser.add_argument('--echo-cmd', required=False,
-                         action='store_true',
-                         help='Trace the command before running.')
-  argparser.add_argument('--command', nargs=argparse.REMAINDER,
-                         help='Command to run if attributes found.')
-
-  args = argparser.parse_args()
-
-  # Quit early if no command to run.
-  if not args.command:
-    raise RuntimeError("No command argument(s) specified for ifatts")
-
-  if HasFileAttributes(args.file, args.att):
-    stdout_result = shellcmd(args.command, echo=args.echo_cmd)
-    if not args.echo_cmd:
-      sys.stdout.write(stdout_result)
-
-if __name__ == '__main__':
-  main()
-  sys.exit(0)