Revert "Restore Null Device Id for PHONE_TYPE_NONE Devices."

This reverts commit 5da49ff25b3f1070f6fc14aed8d16f55c39cfbe3.

Bug 4964762

Couldn't get this fixed in time without causing other problems.

Change-Id: I3d62787fb34014ab37b4aa4c1dd7c5ea5ca3777e
diff --git a/tests/tests/telephony/src/android/telephony/cts/TelephonyManagerTest.java b/tests/tests/telephony/src/android/telephony/cts/TelephonyManagerTest.java
index 6e8aa27..645eb81 100644
--- a/tests/tests/telephony/src/android/telephony/cts/TelephonyManagerTest.java
+++ b/tests/tests/telephony/src/android/telephony/cts/TelephonyManagerTest.java
@@ -296,7 +296,6 @@
                 break;
 
             case TelephonyManager.PHONE_TYPE_NONE:
-                assertNull(deviceId);
                 assertSerialNumber();
                 assertMacAddressReported();
                 break;