Remove redundant 'RESUME' flag from state machine
Remove redundant 'RESUME' flag from state machine

From tls/s2n_handshake.h, NEGOTIATED and RESUME are equivalent. All of
the other entries in the state machine with session resumption do not
use this flag. There is nothing functionally wrong with this, but it
hurts readability.

colmmacc/s2n,PKRoma/s2n,PKRoma/s2n,raycoll/s2n,alexeblee/s2n,alexeblee/s2n,PKRoma/s2n,bpdavidson/s2n,gibson-compsci/s2n,jldodds/s2n,gibson-compsci/s2n,PKRoma/s2n,wcs1only/s2n,PKRoma/s2n,awslabs/s2n,alexeblee/s2n,bpdavidson/s2n,PKRoma/s2n,wcs1only/s2n,gibson-compsci/s2n,colmmacc/s2n,awslabs/s2n,awslabs/s2n,wcs1only/s2n,wcs1only/s2n,wcs1only/s2n,raycoll/s2n,jldodds/s2n,alexeblee/s2n,bpdavidson/s2n,colmmacc/s2n,PKRoma/s2n,alexeblee/s2n,colmmacc/s2n,wcs1only/s2n,gibson-compsci/s2n,awslabs/s2n,colmmacc/s2n,jldodds/s2n,bpdavidson/s2n,jldodds/s2n,raycoll/s2n,PKRoma/s2n,gibson-compsci/s2n,bpdavidson/s2n,colmmacc/s2n,alexeblee/s2n,raycoll/s2n,raycoll/s2n,gibson-compsci/s2n,raycoll/s2n,awslabs/s2n,awslabs/s2n,wcs1only/s2n,bpdavidson/s2n,jldodds/s2n,wcs1only/s2n