[DO NOT MERGE] Remove code pulled in by accident.

Remove code pulled in by accident in cherry-pick commit fbc5b9f56.

Change-Id: I4e4a336faf71782c208631c581b2587a5364212f
diff --git a/core/dex_preopt.mk b/core/dex_preopt.mk
index 457f1d4..3a43336 100644
--- a/core/dex_preopt.mk
+++ b/core/dex_preopt.mk
@@ -19,18 +19,6 @@
 # The default value for LOCAL_DEX_PREOPT
 DEX_PREOPT_DEFAULT ?= true
 
-# The default values for pre-opting: always preopt PIC.
-# Conditional to building on linux, as dex2oat currently does not work on darwin.
-ifeq ($(HOST_OS),linux)
-  WITH_DEXPREOPT_PIC ?= true
-  WITH_DEXPREOPT ?= true
-# For an eng build only pre-opt the boot image. This gives reasonable performance and still
-# allows a simple workflow: building in frameworks/base and syncing.
-  ifeq (eng,$(TARGET_BUILD_VARIANT))
-    WITH_DEXPREOPT_BOOT_IMG_ONLY ?= true
-  endif
-endif
-
 GLOBAL_DEXPREOPT_FLAGS :=
 ifeq ($(WITH_DEXPREOPT_PIC),true)
 # Compile boot.oat as position-independent code if WITH_DEXPREOPT_PIC=true