oe/process.py: remove it since it is unused and duplicated

deleted file mode 100644
index 26c3e65..0000000
@@ -1,74 +0,0 @@
-import subprocess
-import signal
-
-def subprocess_setup():
-    # Python installs a SIGPIPE handler by default. This is usually not what
-    # non-Python subprocesses expect.
-    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
-
-class CmdError(RuntimeError):
-    def __init__(self, command):
-        self.command = command
-
-    def __str__(self):
-        if not isinstance(self.command, basestring):
-            cmd = subprocess.list2cmdline(self.command)
-        else:
-            cmd = self.command
-
-        return "Execution of '%s' failed" % cmd
-
-class NotFoundError(CmdError):
-    def __str__(self):
-        return CmdError.__str__(self) + ": command not found"
-
-class ExecutionError(CmdError):
-    def __init__(self, command, exitcode, stdout = None, stderr = None):
-        CmdError.__init__(self, command)
-        self.exitcode = exitcode
-        self.stdout = stdout
-        self.stderr = stderr
-
-    def __str__(self):
-        message = ""
-        if self.stderr:
-            message += self.stderr
-        if self.stdout:
-            message += self.stdout
-        if message:
-            message = ":\n" + message
-        return (CmdError.__str__(self) +
-                " with exit code %s" % self.exitcode + message)
-
-class Popen(subprocess.Popen):
-    defaults = {
-        "close_fds": True,
-        "preexec_fn": subprocess_setup,
-        "stdout": subprocess.PIPE,
-        "stderr": subprocess.STDOUT,
-        "stdin": subprocess.PIPE,
-        "shell": False,
-    }
-
-    def __init__(self, *args, **kwargs):
-        options = dict(self.defaults)
-        options.update(kwargs)
-        subprocess.Popen.__init__(self, *args, **options)
-
-def run(cmd, input=None, **options):
-    """Convenience function to run a command and return its output, raising an
-    exception when the command fails"""
-
-    if isinstance(cmd, basestring) and not "shell" in options:
-        options["shell"] = True
-    try:
-        pipe = Popen(cmd, **options)
-    except OSError, exc:
-        if exc.errno == 2:
-            raise NotFoundError(cmd)
-        else:
-            raise
-    stdout, stderr = pipe.communicate(input)
-    if pipe.returncode != 0:
-        raise ExecutionError(cmd, pipe.returncode, stdout, stderr)
-    return stdout