Prevent DUT connect to AP automatically

Remove unnecessary function calls to prevent DUT connects
to AP automatically and cause test failed

Bug: 134899599
Bug: 135083766
Test: WifiHiddenSSIDTest
Change-Id: I4f3ddc94eeb8b78ff88d5ca0858fb6a6d9d2731c
diff --git a/acts/tests/google/wifi/WifiHiddenSSIDTest.py b/acts/tests/google/wifi/WifiHiddenSSIDTest.py
index f794a36..5e08791 100755
--- a/acts/tests/google/wifi/WifiHiddenSSIDTest.py
+++ b/acts/tests/google/wifi/WifiHiddenSSIDTest.py
@@ -107,10 +107,7 @@
             hidden_network: The hidden network config to connect to.
 
         """
-        ret = self.dut.droid.wifiAddNetwork(hidden_network)
-        asserts.assert_true(ret != -1, "Add network %r failed" % hidden_network)
-        self.dut.droid.wifiEnableNetwork(ret, 0)
-        wutils.connect_to_wifi_network(self.dut, hidden_network)
+        wutils.connect_to_wifi_network(self.dut, hidden_network, hidden=True)
         if not wutils.validate_connection(self.dut):
             raise signals.TestFailure("Fail to connect to internet on %s" %
                                        hidden_network)