[grouper][bluetooth] remove file existance check for binaries

Until porters are able to build droid-hal-device packages using OBS
they should stick to building those device-specific/additional binaries
as part of the hybris-hal build process.

Change-Id: Idf79c46f9da2dd3f9e298748ea091ce00360f668
[maguro][bluetooth] remove file existance check for binaries

Until porters are able to build droid-hal-device packages using OBS
they should stick to building those device-specific/additional binaries
as part of the hybris-hal build process.

Change-Id: I78efe6f073651e5dae0181c80ab0dd2137c4f1a9