[CTS] GetEnterpriseConfig should return null when unset

Fix the CTS test.

Bug: 162031037
Test: atest WifiNetworkSuggestionTest
Merged-In: Id2b2f44981c7f98ec62f20cb9e8feb01a007b6b5
Change-Id: Id2b2f44981c7f98ec62f20cb9e8feb01a007b6b5
(cherry picked from commit ab2ec0749594f711dd4501ce01af26848f295a9a)
(cherry picked from commit 92c6456738e99104c2130eface2ef211c120f82b)
diff --git a/tests/tests/wifi/src/android/net/wifi/cts/WifiNetworkSuggestionTest.java b/tests/tests/wifi/src/android/net/wifi/cts/WifiNetworkSuggestionTest.java
index c6fc35f..34a36d6 100644
--- a/tests/tests/wifi/src/android/net/wifi/cts/WifiNetworkSuggestionTest.java
+++ b/tests/tests/wifi/src/android/net/wifi/cts/WifiNetworkSuggestionTest.java
@@ -116,7 +116,6 @@
                 .build();
         validateCommonParams(suggestion);
         assertEquals(TEST_PASSPHRASE, suggestion.getPassphrase());
-        assertNotNull(suggestion.getEnterpriseConfig());
         assertNull(suggestion.getPasspointConfig());
     }
 
@@ -134,7 +133,6 @@
                         .build();
         validateCommonParams(suggestion);
         assertEquals(TEST_PASSPHRASE, suggestion.getPassphrase());
-        assertNotNull(suggestion.getEnterpriseConfig());
         assertNull(suggestion.getPasspointConfig());
     }
 
@@ -152,7 +150,6 @@
                         .build();
         validateCommonParams(suggestion);
         assertEquals(TEST_PASSPHRASE, suggestion.getPassphrase());
-        assertNotNull(suggestion.getEnterpriseConfig());
         assertNull(suggestion.getPasspointConfig());
     }
 
@@ -267,7 +264,6 @@
                         .build();
         validateCommonParams(suggestion, true);
         assertNull(suggestion.getPassphrase());
-        assertNotNull(suggestion.getEnterpriseConfig());
         assertEquals(passpointConfig, suggestion.getPasspointConfig());
     }
 }