README: Remove reStructured text version
README: Remove reStructured text version

It seems a bit superfluous to keep a reStructured text version when
there's a markdown one that is being maintained/updated.

Signed-off-by: Damien Lespiau <64bd3cb94f359c1a3ce68dae5e26b40578526277@intel.com>

erick0z/ciao,matthewrsj/ciao,jorgevgut/ciao,ciao-project/ciao,tpepper/ciao,obedmr/ciao,mcastelino/ciao,matthewrsj/ciao,leoswaldo/ciao,markdryan/ciao,markdryan/ciao,01org/ciao,mrkz/ciao,chavafg/ciao,wcwxyz/ciao,obedmr/ciao,wcwxyz/ciao,mrkz/ciao,tpepper/ciao,jorgevgut/ciao,leoswaldo/ciao,kaccardi/ciao,rbradford/ciao,leoswaldo/ciao,mcastelino/ciao,ciao-project/ciao,erick0z/ciao,wcwxyz/ciao,chavafg/ciao,mcastelino/ciao,obedmr/ciao,tpepper/ciao,jorgevgut/ciao,matthewrsj/ciao,mrkz/ciao,erick0z/ciao,kaccardi/ciao,01org/ciao,rbradford/ciao