Remove obsolete ENABLE_TREBLE references.

ENABLE_TREBLE compiler flags are no longer used. They have been replaced
with use of the VINTF object.

Bug: 32978887
Test: pass
Change-Id: Ie549da48078b2e64ed3a4c1f438574f6572e378b
diff --git a/device-common.mk b/device-common.mk
index f458e5c..3e1b0b7 100644
--- a/device-common.mk
+++ b/device-common.mk
@@ -143,11 +143,6 @@
 PRODUCT_PACKAGES += \
     android.hardware.keymaster@3.0-impl
 
-ifeq ($(ENABLE_TREBLE), true)
-PRODUCT_PACKAGES += \
-    android.hardware.keymaster@3.0-service
-endif
-
 # Usb HAL
 PRODUCT_PACKAGES += \
     android.hardware.usb@1.0-service.marlin
@@ -467,11 +462,6 @@
 PRODUCT_PACKAGES += \
     android.hardware.gnss@1.0-impl
 
-ifeq ($(ENABLE_TREBLE), true)
-PRODUCT_PACKAGES +=                         \
-    android.hardware.gatekeeper@1.0-service
-endif
-
 # Vibrator
 PRODUCT_PACKAGES += \
     android.hardware.vibrator@1.0-impl
@@ -495,11 +485,6 @@
 PRODUCT_PACKAGES += \
     android.hardware.boot@1.0-impl \
 
-ifeq ($(ENABLE_TREBLE), true)
-PRODUCT_PACKAGES += \
-    android.hardware.boot@1.0-service
-endif
-
 # Library used for VTS tests  (only for userdebug and eng builds)
 ifneq (,$(filter userdebug eng, $(TARGET_BUILD_VARIANT)))
 # Test HAL for hwbinder performance benchamrk.