Revert "Build the BoringSSL command-line tool"

This reverts commit 2d4506ca.

Reason for revert: build failure https://ci.chromium.org/p/chromium/builders/ci/win-archive-rel/20860?

Original change's description:
> Build the BoringSSL command-line tool
>
> It contains a benchmarking command that should help confirm the
> impact of https://chromium-review.googlesource.com/c/chromium/src/+/2595350.
>
> Change-Id: Id69232190a3b29538162c46568cf12558606fd44
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2595253
> Commit-Queue: David Benjamin <davidben@chromium.org>
> Commit-Queue: Adam Langley <agl@chromium.org>
> Auto-Submit: David Benjamin <davidben@chromium.org>
> Reviewed-by: Adam Langley <agl@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#840764}

TBR=davidben@chromium.org,agl@chromium.org,chromium-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I7385f137a68b92becbbe4765b1c67b797211f2b3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2613519Reviewed-by: Collin Baker <collinbaker@chromium.org>
Commit-Queue: Collin Baker <collinbaker@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840793}

third_party/boringssl/BUILD.gn

@@ -199,24 +199,6 @@ if (build_with_chromium) {
     deps += [ "//base/test:test_support" ]
   }
 
-  if (!is_ios) {
-    executable("boringssl_tool") {
-      testonly = true
-      sources = tool_sources
-
-      deps = [
-        ":boringssl",
-        "//build/win:default_exe_manifest",
-      ]
-
-      configs -= [ "//build/config/compiler:chromium_code" ]
-      configs += [
-        ":internal_config",
-        "//build/config/compiler:no_chromium_code",
-      ]
-    }
-  }
-
   config("fuzzer_config") {
     visibility = [ ":*" ]  # Only targets in this file can depend on this.
     defines = [