[docs] remove reference to long-deprecated information. (imc); Also remove a reference to an alternate definition for PMC that never caught on.
[docs] remove reference to long-deprecated information. (imc); Also remove
a reference to an alternate definition for PMC that never caught on.



git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@23994 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot