Use androidx FlakyTest annotation for device tests.

Platform_testing large test annotation is for
host side tests and restricted, device tests should use
androidx annotation.

Bug: 293837621
Test: presubmit
Change-Id: Ia5faeed2d4cec8c135ea37d5b0d45a338830fec0
diff --git a/services/devicepolicy/TEST_MAPPING b/services/devicepolicy/TEST_MAPPING
index fccd1ec..0d5534b 100644
--- a/services/devicepolicy/TEST_MAPPING
+++ b/services/devicepolicy/TEST_MAPPING
@@ -4,7 +4,7 @@
       "name": "CtsDevicePolicyManagerTestCases",
       "options": [
         {
-          "exclude-annotation": "android.platform.test.annotations.FlakyTest"
+          "exclude-annotation": "androidx.test.filters.FlakyTest"
         },
         {
           "exclude-annotation": "androidx.test.filters.LargeTest"