Fix TelephonyManagerTest Iso Checks

Even though a device may not have the telephony feature it may define
these properties if it uses a SIM.

Change-Id: I29caedc365112e76a8e47a8df9646361b62954f7
diff --git a/tests/tests/telephony/src/android/telephony/cts/TelephonyManagerTest.java b/tests/tests/telephony/src/android/telephony/cts/TelephonyManagerTest.java
index 9aa9b0c..0528897 100644
--- a/tests/tests/telephony/src/android/telephony/cts/TelephonyManagerTest.java
+++ b/tests/tests/telephony/src/android/telephony/cts/TelephonyManagerTest.java
@@ -452,7 +452,7 @@
                     + ISO_COUNTRY_CODE_PATTERN,
                     Pattern.matches(ISO_COUNTRY_CODE_PATTERN, countryCode));
         } else {
-            assertEquals("", countryCode);
+            // Non-telephony may still have the property defined if it has a SIM.
         }
     }
 
@@ -464,7 +464,7 @@
                     + ISO_COUNTRY_CODE_PATTERN,
                     Pattern.matches(ISO_COUNTRY_CODE_PATTERN, countryCode));
         } else {
-            assertEquals("", countryCode);
+            // Non-telephony may still have the property defined if it has a SIM.
         }
     }
 }