Revert "HWC: Check for proper MDP version to enable C2D comp"

This reverts commit 88e2b9cef6827506467599995e921374ff334ee0.

Change-Id: I092b2c073280b52bd1280fbddbcc09a805800200
hwc: Make the fallback to Copybit composition a compile time option

- let only the devices that actually need it to use this code path
  (it breaks the transition animations on S4 Plus devices otherwise)

Change-Id: Ie6dadf5f0b32631c355eb41e6a0e77ed4e08f763