[sdk] Correctly log missing SDK elements.

Bug: DX-685
Change-Id: I6f37ab30a00111275f8fea33bb0f43ae89f8d486
diff --git a/build/sdk/verify_sdk_api.py b/build/sdk/verify_sdk_api.py
index bc60106..92cd162 100755
--- a/build/sdk/verify_sdk_api.py
+++ b/build/sdk/verify_sdk_api.py
@@ -55,7 +55,7 @@
         print('Elements added to SDK:')
         for id in sorted(added_ids):
             print(' - %s' % id)
-    if added_ids:
+    if removed_ids:
         print('Elements removed from SDK:')
         for id in sorted(removed_ids):
             print(' - %s' % id)