Remove stale dexopt flags.

BUILD_WITHOUT_PV := true

## precise GC ##

ifneq ($(filter dalvik.gc.type-precise,$(PRODUCT_TAGS)),)

  # Enabling type-precise GC results in larger optimized DEX files.  The

  # additional storage requirements for ".odex" files can cause /system

  # to overflow on some devices, so this is configured separately for

  # each product.

  ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.dexopt-flags=m=y

endif

ADDITIONAL_BUILD_PROPERTIES += net.bt.name=Android

# enable vm tracing in files for now to help track