remove older fbcode_builder_config.py file

Summary:
Remove the old `fbcode_builder_config.py` file used by the previous
incarnation of fbcode_builder.  This file hasn't been used in a while now.
Folly instead builds with `build/fbcode_builder/getdeps.py`, which uses the
configuration file at `build/fbcode_builder/manifests/folly`

Reviewed By: wez

Differential Revision: D23591355

fbshipit-source-id: b2e193c7dc54dcf481557984b5833fa92ff4049c

build/README.md

-This directory contains `fbcode_builder` configuration and scripts.
-Note that the `folly/build` subdirectory also contains some additional build
-scripts for other platforms.
-
-## Building using `fbcode_builder`
-
-`fbcode_builder` is a small tool shared by several Facebook projects to help
-drive continuous integration builds for our open source repositories.  Its
-files are in `folly/fbcode_builder` (on Github) or in
-`fbcode/opensource/fbcode_builder` (inside Facebook's repo).
-
-Start with the READMEs in the `fbcode_builder` directory.
-
-`./fbcode_builder_config.py` contains the project-specific configuration.

build/fbcode_builder_config.py

-#!/usr/bin/env python
-# Copyright (c) Facebook, Inc. and its affiliates.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from __future__ import absolute_import, division, print_function, unicode_literals
-
-import specs.fmt as fmt
-import specs.gmock as gmock
-from shell_quoting import ShellQuoted
-
-
-"fbcode_builder steps to build & test folly"
-
-
-def fbcode_builder_spec(builder):
-    builder.add_option(
-        "folly/_build:cmake_defines", {"BUILD_SHARED_LIBS": "OFF", "BUILD_TESTS": "ON"}
-    )
-    return {
-        "depends_on": [fmt, gmock],
-        "steps": [
-            builder.fb_github_cmake_install("folly/_build"),
-            builder.step(
-                "Run folly tests",
-                [
-                    builder.run(
-                        ShellQuoted("ctest --output-on-failure -j {n}").format(
-                            n=builder.option("make_parallelism")
-                        )
-                    )
-                ],
-            ),
-        ],
-    }
-
-
-config = {
-    "github_project": "facebook/folly",
-    "fbcode_builder_spec": fbcode_builder_spec,
-}