Remove //third_party:mockito2

Change-Id: Ib4f7d6d047eeca56f18a923e4c68f2a63af37b92
diff --git a/third_party/BUILD b/third_party/BUILD
index fbb71bd..9e7d160 100644
--- a/third_party/BUILD
+++ b/third_party/BUILD
@@ -585,15 +585,6 @@
 )
 
 java_import(
-    name = "mockito2",
-    jars = ["mockito/mockito-core-2.25.1.jar"],
-    deps = [
-        ":byte_buddy",
-        ":objenesis",
-    ],
-)
-
-java_import(
     name = "objenesis",
     jars = ["objenesis/objenesis-1_3.jar"],
 )