remove an unused filegroup

Author: aignas

python/pip_install/BUILD.bazel

@@ -49,12 +49,6 @@ filegroup(
     visibility = ["//python:__pkg__"],
 )
 
-filegroup(
-    name = "repositories",
-    srcs = ["repositories.bzl"],
-    visibility = ["//tools/private/update_deps:__pkg__"],
-)
-
 filegroup(
     name = "bzl",
     srcs = glob(["*.bzl"]),