Remove return value in clearApplicationUserData

Bug: 65280228
Test: cts-tradefed run singleCommand cts -m DevicePolicyManager --test com.android.cts.devicepolicy.MixedDeviceOwnerTest#testClearApplicationData_testPkg
Test: cts-tradefed run singleCommand cts -m DevicePolicyManager --test com.android.cts.devicepolicy.MixedDeviceOwnerTest#testClearApplicationData_deviceProvisioning
Test: cts-tradefed run singleCommand cts -m DevicePolicyManager --test com.android.cts.devicepolicy.MixedDeviceOwnerTest#testClearApplicationData_activeAdmina
Change-Id: I8808ba49492771321a3b7eb1773f1bda9c595bc6
4 files changed