Remove the pass_words option

Since Kaylee now supports Python plugins that can do arbitrary things
with spoken words, the pass_words option for shell commands seems
somewhat less necessary than before.  I never liked it in the first
place, because it was all-or-nothing: there was no non-hackish way to
pass the spoken words to only specific commands.  If I ever see a
compelling reason for this feature to come back, it may be
re-implemented in the form of a second shell plugin that passes words to
its commands.

kayleevc/plugins/shell.py

                 subprocess.call(self.options['valid_sentence_command'],
                                 shell=True)
             cmd = self.commands[text]
-            # Should we be passing words?
-            # TODO: configuration changes to make this not ridiculous
-            if self.options['pass_words']:
-                cmd += " " + text
             self._run_command(cmd)
             # TODO: Logging can be handled along with valid_sentence_command
             #self.log_history(text)
                                 shell=True)
             cmd = self.commands[numt]
             cmd = cmd.format(*nums)
-            # Should we be passing words?
-            if self.options['pass_words']:
-                cmd += " " + text
             self._run_command(cmd)
             #self.log_history(text)
             return True

kayleevc/util.py

                 action="store_true", dest="continuous", default=False,
                 help="Start interface with 'continuous' listen enabled")
 
-        self._parser.add_argument("-p", "--pass-words",
-                action="store_true", dest="pass_words", default=False,
-                help="Pass the recognized words as arguments to the shell" +
-                " command")
-
         self._parser.add_argument("-H", "--history", type=int,
                 action="store", dest="history",
                 help="Number of commands to store in history file")