nes_buttons: remove references to 'nes' user.

I stopped using the nes user in this configuration, but there were a
couple left-over places that referenced it.

Author: coderkevin

buttons/init/nes_buttons

@@ -27,8 +27,6 @@ RETVAL=0
 
 NES_BUTTONS_OPTS="-p $pidfile -l $logfile"
 
-RUNASUSER=nes
-
 case "$1" in
 	start)
 		log_daemon_msg "Starting $prog: "

buttons/nes_buttons_daemon.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python2.7
 
+import sys
 import traceback
 import argparse
 import signal
@@ -24,7 +25,7 @@ def start_daemon( pidf, logf ):
     try:
         with daemon.DaemonContext(
             working_directory='/var/lib/nes_buttons',
-            gid = grp.getgrnam( 'nes' ).gr_gid,
+            gid = grp.getgrnam( 'pi' ).gr_gid,
             umask=0o002,
             pidfile=pidfile.TimeoutPIDLockFile( pidf ),
             ) as context: