Revert "Add FFT"

This reverts commit 793191974d8458d3f8f0ab7ac01de06549e9ec54.

Conflicts:
	ADC main 25k22.c
	dist/default/production/FFT.X.production.map
	fft.c
	fft.h
	funclist
	nbproject/Makefile-default.mk
	nbproject/Makefile-genesis.properties
	nbproject/Makefile-local-default.mk
	nbproject/configurations.xml
	nbproject/private/configurations.xml