[benchmarks] Remove broken runsc benchmark.

This has been replaced by the gRPC build benchmark
which is below the removed BuildRunsc benchmark.

PiperOrigin-RevId: 463393704

images/benchmarks/runsc/Dockerfile.x86_64

@@ -1,25 +0,0 @@
-FROM ubuntu:18.04
-
-RUN set -x \
-        && apt-get update \
-        && apt-get install -y \
-            wget \
-            git \
-            pkg-config \
-            zip \
-            g++ \
-            zlib1g-dev \
-            unzip \
-            python-minimal \
-            python3 \
-            python3-pip \
-        && rm -rf /var/lib/apt/lists/*
-
-RUN wget https://github.com/bazelbuild/bazel/releases/download/3.4.1/bazel-3.4.1-installer-linux-x86_64.sh
-RUN chmod +x bazel-3.4.1-installer-linux-x86_64.sh
-RUN ./bazel-3.4.1-installer-linux-x86_64.sh
-
-# Download release-20200601.0
-RUN mkdir gvisor && cd gvisor \
-    && git init && git remote add origin https://github.com/google/gvisor.git \
-    && git fetch --depth 1 origin a9b47390c821942d60784e308f681f213645049c && git checkout FETCH_HEAD

test/benchmarks/fs/bazel_test.go

@@ -29,12 +29,6 @@ func BenchmarkBuildABSL(b *testing.B) {
 	runBuildBenchmark(b, "benchmarks/absl", "/abseil-cpp", "absl/base/...")
 }
 
-// Note: CleanCache versions of this test require running with root permissions.
-// Note: This test takes on the order of 10m per permutation for runsc on kvm.
-func BenchmarkBuildRunsc(b *testing.B) {
-	runBuildBenchmark(b, "benchmarks/runsc", "/gvisor", "runsc:runsc")
-}
-
 // Note: CleanCache versions of this test require running with root permissions.
 // Note: This test takes on the order of 6m per permutation for runsc on kvm.
 func BenchmarkBuildGRPC(b *testing.B) {