tzdata: Don't install /etc/timezone
tzdata: Don't install /etc/timezone

Configure tzdata not to install an /etc/timezone file since NILRT's
glibc is configured to only uses /etc/localtime. Most software uses libc
to manipulate timestamps, so this additional conf is an unnecessary
burden on sysadmins.

Signed-off-by: Haris Okanovic <4f2c24956fa4a8756878315db434b9fed29fa615@ni.com>
Natinst-ReviewBoard-ID: 121629
Reviewed-by: Brad Mouring <58d99a887450796456131638ba4c43b5ba95afcf@ni.com>
Reviewed-by: Richard Tollerton <67c688e7f7482ba5c4ebe3d70bc77594748182a6@ni.com>

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt