Also remove some useless math/DSP headers.
The USB code really needed updating, considering the following entries from ST's
release notes (
https://raw.github.com/STMicroelectronics/STM32CubeF0/master/Release_Notes.html
) :
-Bug fix: USB_ReadPMA() and USB_WritePMA() by ensuring 16-bits access to
USB PMA memory
-Bug fix: correct USB RX count calculation
-Fix USB Bulk transfer double buffer mode
The project uses tabs with a length of 4 spaces, and spaces for
continuation, so lets use that for the whole project. There are
many trailing whitespaces and empty lines here and there; get
rid of them as well.
Some files have Windows line endings which is annoying, since pathes
won't apply, diffs looks ugly etc. So do convert the few files which
have Windows line endings to use Unix line endings as well.
