emacs: simplify default font size
emacs: simplify default font size

Depending on how the VM is started (windowed on big 27" display, or on
native MacBook Air retina display), w0's display DPI gets changed. In
the case of simplicity vs. complexity for something that is unfixable,
simplicity wins.

listx/syscfg,listx/syscfg,listx/syscfg,listx/syscfg,listx/syscfg