Revert "RootCanal: Add a scripted beacon for testing"

Revert submission 1295793-Playback_beacon

Reason for revert: <INSERT REASONING HERE>
Reverted Changes:
I2525a23ef:Support for reading playback file in scripted beac...
I201eff704:RootCanal: Add a scripted beacon for testing

Gd host test broken due to:
root-canal: error while loading shared libraries: libprotobuf-cpp-lite.so: cannot open shared object file: No such file or directory

Change-Id: If2c4779c46379b8787732eac5a36a3461d46ca53