APP: Delete commented hardware configuration code
APP: Delete commented hardware configuration code

This code (initialization of GPIO, DMA, ADC, timers) was moved
to the LIB, and just makes the file harder to read. If we ever
want to move it back, we will do exactly that.

lornix/freezing-tribble,cjheath/dso-firmware,lornix/freezing-tribble,lornix/freezing-tribble