holiday: no longer use prebuilt init binary.

with the below commit. this is no longer needed.

https://github.com/Team-Hydra/android_device_htc_holiday/commit/01ab22dd39df2eceeec48af2122e83ca49e91fde

Change-Id: I8b7b0af3d6cf814e9a0da754fb10c048b3c2a82f