update wifi unit test script

Need to add "--no-hidden-api-checks" to unit test script.

Verified by running runtests

Bug: 78465388
Test: frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: I916a2870bde2cbfe1966d18a0f7a13def2bd1ce7
diff --git a/wifi/tests/runtests.sh b/wifi/tests/runtests.sh
index ebcc2a2..4e52b8f 100755
--- a/wifi/tests/runtests.sh
+++ b/wifi/tests/runtests.sh
@@ -21,4 +21,5 @@
 
 adb install -r -g "$OUT/data/app/FrameworksWifiApiTests/FrameworksWifiApiTests.apk"
 
-adb shell am instrument -w "$@" 'android.net.wifi.test/android.support.test.runner.AndroidJUnitRunner'
+adb shell am instrument --no-hidden-api-checks -w "$@" \
+  'android.net.wifi.test/android.support.test.runner.AndroidJUnitRunner'