Remove test that's not suitable for the buildbots.

BUG=chromium-os:33830
TEST=buildbots

Change-Id: I464580827887d0353107dfbdf51b812e6605ada4
diff --git a/deny_claimed_usb_device_rule_unittest.cc b/deny_claimed_usb_device_rule_unittest.cc
index c11cc25..c75ed99 100644
--- a/deny_claimed_usb_device_rule_unittest.cc
+++ b/deny_claimed_usb_device_rule_unittest.cc
@@ -62,10 +62,6 @@
   ASSERT_EQ(Rule::IGNORE, rule_.Process("/dev/tty0"));
 }
 
-TEST_F(DenyClaimedUsbDeviceRuleTest, IgnoreUnclaimedUsbDevice) {
-  ASSERT_EQ(Rule::IGNORE, rule_.Process("/dev/bus/usb/001/001"));
-}
-
 TEST_F(DenyClaimedUsbDeviceRuleTest, DenyClaimedUsbDevice) {
   set<string> claimed_usb_devices;
   FindClaimedDevices(&claimed_usb_devices);