Temporarily ignore flaky test.

Test: atest SystemUITests
Change-Id: Ib00b4765abfe94c66f46868c4d13ed0a5018064c

packages/SystemUI/tests/src/com/android/systemui/util/animation/PhysicsAnimatorTest.kt

@@ -23,6 +23,7 @@ import org.junit.Assert.assertFalse
 import org.junit.Assert.assertNotEquals
 import org.junit.Assert.assertTrue
 import org.junit.Before
+import org.junit.Ignore
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.mockito.ArgumentMatchers.anyFloat
@@ -446,6 +447,7 @@ class PhysicsAnimatorTest : SysuiTestCase() {
     }
 
     @Test
+    @Ignore("Sporadically flaking.")
     fun testFlingThenSpring() {
         PhysicsAnimatorTestUtils.setAllAnimationsBlock(false)