Clear LOCAL_JACK_ENABLED for ANDROID_COMPILE_WITH_JACK=false

CL I2189055aac9deccc36b8eab8e949796dddadf7a1 moved the
ANDROID_COMPILE_WITH_JACK=false check to configure_local_jack.mk,
which broke some modules that use ifndef LOCAL_JACK_ENABLED to
change their behavior we jack is disabled.  Clear
DEFAULT_JACK_ENABLED when ANDROID_COMPILE_WITH_JACK=false so
that LOCAL_JACK_ENABLED is cleared.

Bug: 37483961
Test: m -j checkbuild
Change-Id: I0d08946c57182689624c57f4952d7cecaa0b82b3