[Autotest]Correcting parameters passed to start softAAP stress

Bug=b:36654118
Test=MAnual

Change-Id: I0c8c88a748e9152cab632a1ccfe52d281fc5c1e0
Reviewed-on: https://chromium-review.googlesource.com/509915
Reviewed-by: Bindu Mahadev <bmahadev@chromium.org>
Commit-Queue: Bindu Mahadev <bmahadev@chromium.org>
Tested-by: Bindu Mahadev <bmahadev@chromium.org>
Trybot-Ready: Bindu Mahadev <bmahadev@chromium.org>
diff --git a/server/site_tests/android_ACTS/control.WifiSoftApStress b/server/site_tests/android_ACTS/control.WifiSoftApStress
index f15c0bf..b5059b3 100644
--- a/server/site_tests/android_ACTS/control.WifiSoftApStress
+++ b/server/site_tests/android_ACTS/control.WifiSoftApStress
@@ -18,7 +18,6 @@
                  testbed=hosts.create_testbed(machine),
                  config_file='wifi_softApStress.config',
                  test_file='wifi_softApStress',
-                 additional_cmd_line_params="-r 10000",
                  acts_timeout=72000)
 
 parallel_simple(run, machines)