In BUILD make load a one liner

Change-Id: I9dccc28ab4d3a3addfe39bac876606844cb98f42

BUILD

diff --git a/BUILD b/BUILD
index 067cd77..5530be2 100644
--- a/BUILD
+++ b/BUILD
@@ -1,7 +1,4 @@
-load(
-    "//tools/bzl:plugin.bzl",
-    "gerrit_plugin",
-)
+load("//tools/bzl:plugin.bzl" "gerrit_plugin")
 
 gerrit_plugin(
     name = "zuul",