Remove unused files

RELNOTES: None
PiperOrigin-RevId: 313044843
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CrosstoolConfigProtoCodecRegisterer.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CrosstoolConfigProtoCodecRegisterer.java
deleted file mode 100644
index 5d7a0b0..0000000
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CrosstoolConfigProtoCodecRegisterer.java
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2018 The Bazel Authors. All rights reserved.
-//
-// 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.
-
-package com.google.devtools.build.lib.rules.cpp;
-
-import com.google.common.collect.ImmutableList;
-import com.google.devtools.build.lib.skyframe.serialization.CodecRegisterer;
-import com.google.devtools.build.lib.skyframe.serialization.MessageLiteCodec;
-import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig;
-
-class CrosstoolConfigProtoCodecRegisterer implements CodecRegisterer<MessageLiteCodec> {
-  @Override
-  public Iterable<MessageLiteCodec> getCodecsToRegister() {
-    return ImmutableList.of(
-        new MessageLiteCodec(CrosstoolConfig.CrosstoolRelease::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.FlagGroup::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.VariableWithValue::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.EnvEntry::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.FeatureSet::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.WithFeatureSet::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.FlagSet::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.EnvSet::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.Feature::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.Tool::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.ArtifactNamePattern::newBuilder),
-        new MessageLiteCodec(CrosstoolConfig.CToolchain.ActionConfig::newBuilder));
-  }
-}
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CrosstoolConfigurationOptions.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CrosstoolConfigurationOptions.java
deleted file mode 100644
index f406d44..0000000
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CrosstoolConfigurationOptions.java
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2014 The Bazel Authors. All rights reserved.
-//
-// 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.
-
-package com.google.devtools.build.lib.rules.cpp;
-
-import javax.annotation.Nullable;
-
-/**
- * A container object which provides crosstool configuration options to the build.
- */
-public interface CrosstoolConfigurationOptions {
-  /** Returns the CPU associated with this crosstool configuration. */
-  String getCpu();
-
-  /** Returns the compiler associated with this crosstool configuration. */
-  @Nullable
-  String getCompiler();
-}