ChangeInputProtoConverterTest: remove redundant type specification

Release-Notes: skip
Change-Id: Ib1fb04a2093f21f17da3d0d57a38af6acb1b7a2e
diff --git a/javatests/com/google/gerrit/entities/converter/ChangeInputProtoConverterTest.java b/javatests/com/google/gerrit/entities/converter/ChangeInputProtoConverterTest.java
index 7123d42..53a2f11 100644
--- a/javatests/com/google/gerrit/entities/converter/ChangeInputProtoConverterTest.java
+++ b/javatests/com/google/gerrit/entities/converter/ChangeInputProtoConverterTest.java
@@ -99,7 +99,7 @@
 
     changeInput.author = createAccountInput();
 
-    changeInput.responseFormatOptions = new ArrayList<ListChangesOption>();
+    changeInput.responseFormatOptions = new ArrayList<>();
     changeInput.responseFormatOptions.addAll(
         ImmutableList.of(ListChangesOption.LABELS, ListChangesOption.DETAILED_LABELS));