Refactor all tests inheriting from WifiBaseTest as per b/137199892

Bug: 137199892
Test: manual
Change-Id: Ie6dbace7bfbd66aa02041a69d9421b0b012c60f4
diff --git a/acts/tests/google/wifi/WifiCrashTest.py b/acts/tests/google/wifi/WifiCrashTest.py
old mode 100755
new mode 100644
index 6d1123e..d43a0b9
--- a/acts/tests/google/wifi/WifiCrashTest.py
+++ b/acts/tests/google/wifi/WifiCrashTest.py
@@ -44,10 +44,9 @@
     * One Wi-Fi network visible to the device.
     """
 
-    def __init__(self, controllers):
-        WifiBaseTest.__init__(self, controllers)
-
     def setup_class(self):
+        super().setup_class()
+
         self.dut = self.android_devices[0]
         wutils.wifi_test_device_init(self.dut)
         req_params = []