[client] remove C++11 extensions from exported header

Changelist 708fdff19 included updates to the exported C++ header
write_op.h.  The C++ client API is still kept C++98 compliant,
so C++11 extensions should not be present.

This patch reverts the changes in src/kudu/client/write_op.h
that 708fdff19 introduced.

This is a follow-up to 708fdff19073dbe9dc4eb9492551443aa38111f9.

Change-Id: I042ccaa76e424475dd2347505a611cdcab5c21d3
Reviewed-on: http://gerrit.cloudera.org:8080/18764
Tested-by: Alexey Serbin <alexey@apache.org>
Reviewed-by: Attila Bukor <abukor@apache.org>
1 file changed