Remove left over bazlets.bzl from standalone build mode

In I1232264584 standalone build mode was removed, but bazlets.bzl was
missed to be removed.

Change-Id: Idb38a622f9b5bd8f696b0d45752a4621736114d8
diff --git a/bazlets.bzl b/bazlets.bzl
deleted file mode 100644
index f089af4..0000000
--- a/bazlets.bzl
+++ /dev/null
@@ -1,18 +0,0 @@
-load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
-
-NAME = "com_googlesource_gerrit_bazlets"
-
-def load_bazlets(
-        commit,
-        local_path = None):
-    if not local_path:
-        git_repository(
-            name = NAME,
-            remote = "https://gerrit.googlesource.com/bazlets",
-            commit = commit,
-        )
-    else:
-        native.local_repository(
-            name = NAME,
-            path = local_path,
-        )