Bazel: Remove unused java_library import

Change-Id: I27e3ea944b55296058ba41cd184078b26f854225

BUILD

diff --git a/BUILD b/BUILD
index 35d676e..d5a550f 100644
--- a/BUILD
+++ b/BUILD
@@ -1,4 +1,3 @@
-load("@rules_java//java:defs.bzl", "java_library")
 load("//tools/bzl:junit.bzl", "junit_tests")
 load(
     "//tools/bzl:plugin.bzl",