Remove authorizing asset store

Authorization should be handled by the fetch/push servers, not the asset store.

Author: tomcoldrick-ct

pkg/storage/BUILD.bazel

@@ -7,7 +7,6 @@ go_library(
         "asset.go",
         "asset_reference.go",
         "asset_store.go",
-        "authorizing_asset_store.go",
         "blob_access_asset_store.go",
         "digest.go",
     ],
@@ -18,7 +17,6 @@ go_library(
         "//pkg/qualifier",
         "@bazel_remote_apis//build/bazel/remote/asset/v1:remote_asset_go_proto",
         "@bazel_remote_apis//build/bazel/remote/execution/v2:remote_execution_go_proto",
-        "@com_github_buildbarn_bb_storage//pkg/auth",
         "@com_github_buildbarn_bb_storage//pkg/blobstore",
         "@com_github_buildbarn_bb_storage//pkg/blobstore/buffer",
         "@com_github_buildbarn_bb_storage//pkg/digest",
@@ -35,7 +33,6 @@ go_test(
     srcs = [
         "action_cache_asset_store_test.go",
         "asset_reference_test.go",
-        "authorizing_asset_store_test.go",
         "blob_access_asset_store_test.go",
     ],
     deps = [