Remove the critical sections as not all ports can yield from within critical sections.
Remove the critical sections as not all ports can yield from within critical sections.

git-svn-id: 43aea61533866f88f23079d48f4f5dc2d5288937@363 1d2547de-c912-0410-9cb9-b8ca96c0e9e2

Psykar/kubos,kubostech/KubOS,Psykar/kubos,Psykar/kubos,Psykar/kubos,kubostech/KubOS,Psykar/kubos,Psykar/kubos,Psykar/kubos