Remove stale README; the one in the top-level directory is the right one

Docker/README.md

@@ -1,6 +0,0 @@
-- `./build-docker.sh` builds the docker image
-- `./run-docker.sh` launches three docker containers for parties P2, P0, and P1
-- `./set-networking.sh` sets up the latencies and bandwidth constraints among the three docker containers launched; pass arguments of latency and bandwidth (e.g., `./set-networking.sh 1ms 40mbit`).  `./unset-networking.sh` removes the latency and bandwidth settings.
-- `./experiments.sh` runs the three parties
-- `./cleanup.sh` stops the three dockers
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