Do not set property jpda.settings.syncPort in JDWP tests.

Let the OS choose the port automatically.

Bug: 28869570
Change-Id: I79775f9e72f7f8d0f9ec3d68c6f0bdb057ca13ff
diff --git a/tools/run-jdwp-tests.sh b/tools/run-jdwp-tests.sh
index 3e5a1c0..976e1d8 100755
--- a/tools/run-jdwp-tests.sh
+++ b/tools/run-jdwp-tests.sh
@@ -24,7 +24,7 @@
 
 if [ ! -f $test_jack ]; then
   echo "Before running, you must build jdwp tests and vogar:" \
-       "make apache-harmony-jdwp-tests-hostdex vogar vogar.jar"
+       "make apache-harmony-jdwp-tests-hostdex vogar"
   exit 1
 fi
 
@@ -122,7 +122,6 @@
       $image_compiler_option \
       --timeout 800 \
       --vm-arg -Djpda.settings.verbose=true \
-      --vm-arg -Djpda.settings.syncPort=34016 \
       --vm-arg -Djpda.settings.transportAddress=127.0.0.1:55107 \
       --vm-arg -Djpda.settings.debuggeeJavaPath="$art_debugee $image $debuggee_args" \
       --classpath $test_jack \