top: eliminate all superfluous cruft under the new API

top: eliminate all superfluous cruft under the new API

This commit is just a cleanup of some extraneous cruft
left after the newlib migrations and summarized below:

. whack the 2nd line of what was an eliminated comment

. eliminated reference to NUM_NS and thus that need to
include the otherwise defunct 'readproc.h' header file

. reference to Frame_maxtask made properly generalized

. all former sort support #define's are now eliminated

Signed-off-by: Jim Warner <james.warner@comcast.net>