Ignore ANDROID_JACK_VM_ARGS and ANDROID_JACK_EXTRA_ARGS

This is a temporrary workaround allowing to ignore outdated options
given by the build server that may cause OutOfMemoryError when
running Jack server.

Change-Id: I1b6b956de09faaeee1bf6a25c2a63124b69e2645
diff --git a/core/config.mk b/core/config.mk
index cbe1227..b54ce40 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -444,16 +444,8 @@
 $(JACK_SERVER_LOG_COMMAND) JACK_VM_COMMAND="$(JACK_VM) $(1) $(JAVA_TMPDIR_ARG)" JACK_JAR="$(JACK_JAR)" $(JACK) $(2)
 endef
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JACK_VM_ARGS := $(DEFAULT_JACK_VM_ARGS)
-ifneq ($(ANDROID_JACK_VM_ARGS),)
-DEFAULT_JACK_VM_ARGS := $(ANDROID_JACK_VM_ARGS)
-else
 DEFAULT_JACK_VM_ARGS := -Dfile.encoding=UTF-8 -Xms2560m -XX:+TieredCompilation
-endif
-ifneq ($(ANDROID_JACK_EXTRA_ARGS),)
-DEFAULT_JACK_EXTRA_ARGS := $(ANDROID_JACK_EXTRA_ARGS)
-else
 DEFAULT_JACK_EXTRA_ARGS := -D sched.runner=multi-threaded -D  sched.runner.thread.kind=fixed -D sched.runner.thread.fixed.count=4 --sanity-checks off -D jack.reporter.level.file=error=--,warning=-
-endif
 # Turn off jack warnings by default.
 DEFAULT_JACK_EXTRA_ARGS += --verbose error