delete Makefile. use cmake

wangzhengquan

2021-01-19 3baa1ff0ea9c24f4ecf0f818f2c5909d6d918f5e

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ipcrm -a
 
./dgram_mod_req_rep server 2 & node0=$! && sleep 1
./dgram_mod_req_rep client 2 node1
kill $node0