Relax the check for dexpreopt files in the ART apex.

This is to fix builds that set WITH_DEXPREOPT=false variable in Make.

Test: aosp_walleye-userdebug builds.
Test: aosp_walleye-eng builds with a temporary patch in
  build/make/core/board_config.mk that disables dexpreopt:
    -ifeq ($(HOST_OS),linux)
    -  WITH_DEXPREOPT := true
    -endif
    +# ifeq ($(HOST_OS),linux)
    +#   WITH_DEXPREOPT := true
    +# endif

Bug: 149273451

Change-Id: I376e01760ea238b1f45f7e236d3c391c1d068c23
1 file changed