Remove dependency on Mockito.

Change-Id: Ia7d4f58d558c6e1c4adb82224c01da06c1f605a4
diff --git a/BUILD b/BUILD
index 887d6fa..0914e7b 100644
--- a/BUILD
+++ b/BUILD
@@ -23,6 +23,5 @@
     tags = ["automerger"],
     deps = PLUGIN_DEPS + PLUGIN_TEST_DEPS + [
         ":automerger__plugin",
-        "@mockito//jar",
     ],
 )
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index ebb3c56..f166334 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -3,12 +3,6 @@
 
 def external_plugin_deps():
   maven_jar(
-    name = 'mockito',
-    artifact = 'org.mockito:mockito-all:1.9.5',
-    sha1 = '79a8984096fc6591c1e3690e07d41be506356fa5',
-  )
-
-  maven_jar(
     name = 're2j',
     artifact = 'com.google.re2j:re2j:1.0',
     sha1 = 'd24ac5f945b832d93a55343cd1645b1ba3eca7c3',