Stop setting dalvik.vm.image-dex2oat-filter property

This system property is no longer expected by ART. There is a new
way to disable all dexpreopt and dexopt using
`OVERRIDE_DISABLE_DEXOPT_ALL`, `dalvik.vm.disable-art-service-dexopt`,
and `dalvik.vm.disable-odrefresh`. See
build/make/target/product/runtime_libart.mk for more details.

JIT Zygote mode uses the `verify` filter, which `extract` is an alias for, so deleting the property is a no-op.

This also cleans up the deprecation warning for the `extract` value in
logcat.

Test: TH
Test: Build and boot eng variant
Change-Id: I9eab28fa6db5774e5285a007bdefa6d8ce133a58