images: Clean up the NXG image install list
images: Clean up the NXG image install list

The n130 is dead now, so simplify the install list by only declaring
things additively.

Signed-off-by: Joe Hershberger <7eda828be74302ad8146b816f8e7737b6e7767c8@ni.com>
Natinst-ReviewBoard-ID: 286051
Natinst-AZDO-ID: 92918

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