Removes the `linux_bazel` build configuration.

This is a part of a series of changes that moves `linux_bazel` to `linux_bazel_core`.

Closes https://github.com/google/iree/pull/2190

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/iree/pull/2190 from phoenix-meadowlark:delete-linux-bazel 325f126bff07d3f46d203e174edfd90d4811e447
PiperOrigin-RevId: 316002873
diff --git a/kokoro/gcp_ubuntu/bazel/common.cfg b/kokoro/gcp_ubuntu/bazel/common.cfg
deleted file mode 100644
index 4c4bfa3..0000000
--- a/kokoro/gcp_ubuntu/bazel/common.cfg
+++ /dev/null
@@ -1,23 +0,0 @@
-# Format: //devtools/kokoro/config/proto/build.proto
-
-# Copyright 2019 Google LLC
-#
-# 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
-#
-#      https://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.
-
-# Common configuration for Kokoro builds that run the core build on bazel on
-# linux.
-
-# We point to another kokoro build configuration here as a part of moving the
-# old `kokoro/gcp_ubuntu/bazel/ configuration to `kokoro/gcp_ubuntu/bazel/core/`
-# TODO: Remove this file once it is disabled internally in kokoro.
-build_file: "iree/kokoro/gcp_ubuntu/bazel/noop.sh"
diff --git a/kokoro/gcp_ubuntu/bazel/continuous.cfg b/kokoro/gcp_ubuntu/bazel/continuous.cfg
deleted file mode 100644
index af84216..0000000
--- a/kokoro/gcp_ubuntu/bazel/continuous.cfg
+++ /dev/null
@@ -1,19 +0,0 @@
-# Format: //devtools/kokoro/config/proto/build.proto
-
-# Copyright 2019 Google LLC
-#
-# 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
-#
-#      https://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.
-
-# Deliberately blank as everything necessary is configured in common files, but
-# file must still exist to match corresponding (upstream only) job
-# configurations that trigger the builds.
diff --git a/kokoro/gcp_ubuntu/bazel/noop.sh b/kokoro/gcp_ubuntu/bazel/noop.sh
deleted file mode 100644
index 6ee1889..0000000
--- a/kokoro/gcp_ubuntu/bazel/noop.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/bin/bash
-
-# Copyright 2020 Google LLC
-#
-# 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
-#
-#      https://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.
-
-# Common configuration for Kokoro builds that run the core build on bazel on
-# linux.
-
-# This file is intentionally left empty, and will be removed soon. This is being
-# done as a part of moving `kokoro/gcp_ubuntu/bazel/` to
-# `kokoro/gcp_ubuntu/bazel/core/`, and allows for our CI to gracefully stop
-# using this build config.
diff --git a/kokoro/gcp_ubuntu/bazel/presubmit.cfg b/kokoro/gcp_ubuntu/bazel/presubmit.cfg
deleted file mode 100644
index af84216..0000000
--- a/kokoro/gcp_ubuntu/bazel/presubmit.cfg
+++ /dev/null
@@ -1,19 +0,0 @@
-# Format: //devtools/kokoro/config/proto/build.proto
-
-# Copyright 2019 Google LLC
-#
-# 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
-#
-#      https://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.
-
-# Deliberately blank as everything necessary is configured in common files, but
-# file must still exist to match corresponding (upstream only) job
-# configurations that trigger the builds.