Remove explicit dependency on soy

The plugin API exports soy already.

Change-Id: Id781b855cfffc552ea3202a9d93ea2711fa681e7

BUILD

diff --git a/BUILD b/BUILD
index 6c5ea1c..92bbdac 100644
--- a/BUILD
+++ b/BUILD
@@ -10,9 +10,7 @@
     name = "its-base",
     srcs = glob(["src/main/java/**/*.java"]),
     resources = glob(["src/main/resources/**/*"]),
-    deps = [
-      "@soy//jar",
-    ],
+    deps = PLUGIN_DEPS,
 )
 
 TEST_UTIL_SRC = glob(["src/test/java/com/googlesource/gerrit/plugins/its/base/testutil/**/*.java"])

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 9920af0..95cf81a 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -24,15 +24,3 @@
 
 # Load snapshot Plugin API
 gerrit_api_maven_local()
-
-load(
-    "@com_googlesource_gerrit_bazlets//tools:maven_jar.bzl",
-    "maven_jar",
-)
-
-# Keep this version of Soy synchronized with the version used in gerrit.
-maven_jar(
-    name = "soy",
-    artifact = "com.google.template:soy:2017-08-08",
-    sha1 = "792aa49e3ec3f61e793e56b499f0724df1c1e16c",
-)