GitLab

Delete code for zero-size data transfer in packet handlers
of Put/Accumulate/Accumulate_Immed/Get_AccumulateResp/GetResp/
LockPutUnlock/LockAccumUnlock, because they are redundant.

(Note that packet handlers of LockPutUnlock and LockAccumUnlock
are for single operation optimization in passive RMA)

Zero-size data transfer has already been handled when issuing
RMA operations (L146, L258, L369 in src/mpid/ch3/src/ch3u_rma_ops.c
and L50 in src/mpid/ch3/src/ch3u_rma_acc_ops.c). RMA operation
routines will directly exit if data size is zero.
Signed-off-by: Wesley Bland <wbland@mcs.anl.gov>