Remove the picoChip documentation

PicoChip support was removed in r5-3431-g157e859ffe3b5d but the
documentation was missed it seems.

Committed as obvious after running "make html" to make sure the
building of the documentation still works.

Thanks,
Andrew Pinski

gcc/ChangeLog:

	* doc/extend.texi: Remove picoChip builtin section.
	* doc/invoke.texi: Remove picoChip option section.
2 files changed