Remove highlight.js js_component

As indicated in the comment in the bower_component_bundle, this is not
required to be part of the bundle, and is copied directly into the
output zip. Unlike other bower components, this one is intended to be
served from a separate file and loaded on demand, to decrease initial
page load time.

Change-Id: I97a7fbbb7755a10250abf2610c33ed9bcdf73167

lib/js/BUILD

@@ -24,12 +24,6 @@ load("//lib/js:bower_components.bzl", "define_bower_components")
 
 define_bower_components()
 
-js_component(
-    name = "highlightjs",
-    srcs = ["//lib/highlightjs:highlight.min.js"],
-    license = "//lib:LICENSE-highlightjs",
-)
-
 filegroup(
     name = "highlightjs_files",
     srcs = ["//lib/highlightjs:highlight.min.js"],

polygerrit-ui/BUILD

@@ -10,8 +10,6 @@ bower_component_bundle(
     deps = [
         "//lib/js:es6-promise",
         "//lib/js:fetch",
-        # TODO(hanwen): this is inserted separately in the UI zip. Do we need this here?
-        "//lib/js:highlightjs",
         "//lib/js:iron-a11y-keys-behavior",
         "//lib/js:iron-autogrow-textarea",
         "//lib/js:iron-dropdown",