Revert "Support for reading playback file in scripted beacon"

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: I56f45100b6a7f1c4028c5fb9a4b4fdd0d8aa2b89