Revert "Build - Persistence - Add installer support [1/3]"

This reverts commit 177c07a20892b9f5a68a09be30a435c4a2ecf8da.
Revert "Allow devices to specify certain ro. props via TARGET_UNIFIED_DEVICE"

This reverts commit ea499153b11a32fa25311f07033496569c3045a6.
Allow devices to specify certain ro. props via TARGET_UNIFIED_DEVICE

This modifies buildinfo.sh to not set model, name, description, and
fingerprint in build.prop. These can then be set via custom init
lib.
This also fixes ota_from_target_files to function without these
props being preset.

Change-Id: I945b2c38e60b207d2d0f82b34f4f230ac21b0657
ota: Allow devices to skip generation of recovery-from-boot.p

* Not all devices have a real recovery partition, so those devices
  should skip this generation step.

Change-Id: I4abc3f92b879e6997e4874543ec9772c3179b1d0
Use CM standard qcom naming

Change-Id: I360b3dcf1fe82140a7993189e881f9d77b571bef
build: Don't run backuptool on GMS builds

Change-Id: I5dde27f9d16b88049171db9805221d92e67f3e5d
Signed-off-by: aways <aways@c-rom.org>

Conflicts:
	core/Makefile