bazel: remove unused go_ld_test

This was an attempt to make unit tests work where we linked against libraries and ld from Fedora.
This is no longer needed.

bazel/go/go_test.bzl

@@ -40,76 +40,3 @@ def go_test(ld = None, count = 3, **kwargs):
         kwargs["gc_linkopts"] += ["-I", ld]
 
     _go_test(**kwargs)
-
-def _vars_script(env, ld, cmd):
-    ret = ["#!/bin/sh"]
-    for k, v in env.items():
-        ret.append('export {}="{}"'.format(k, v))
-    ret.append('exec {} {} "$@"'.format(ld, cmd))
-    return "\n".join(ret) + "\n"
-
-def _ld_binary_impl(ctx):
-    source_info = ctx.attr.src[DefaultInfo]
-    ld_info = ctx.attr.ld[DefaultInfo]
-
-    executable = None
-    if source_info.files_to_run and source_info.files_to_run.executable:
-        command = _vars_script(ctx.attr.env, ld_info.files_to_run.executable.short_path, source_info.files_to_run.executable.short_path)
-        executable = ctx.actions.declare_file("{}_under_ld".format(ctx.file.src.basename))
-        ctx.actions.write(
-            output = executable,
-            content = command,
-            is_executable = True,
-        )
-
-    runfiles = ctx.runfiles(files = ctx.files.src)
-    runfiles = runfiles.merge(source_info.data_runfiles)
-    runfiles = runfiles.merge(ctx.runfiles(files = ctx.files.ld))
-    runfiles = runfiles.merge(ld_info.data_runfiles)
-    return [DefaultInfo(
-        executable = executable,
-        files = depset([executable]),
-        runfiles = runfiles,
-    )]
-
-_attrs = {
-    "env": attr.string_dict(
-        doc = "Environment variables for the test",
-    ),
-    "ld": attr.label(
-        executable = True,
-        cfg = "exec",
-        doc = "ld wrapper executable",
-    ),
-    "src": attr.label(
-        allow_single_file = True,
-        mandatory = True,
-        doc = "Target to build.",
-    ),
-}
-
-ld_test = rule(
-    implementation = _ld_binary_impl,
-    attrs = _attrs,
-    executable = True,
-    test = True,
-)
-
-def go_ld_test(**kwargs):
-    """go_ld_test is a wrapper for go_test that uses the specified ld to run the test binary under.
-
-    Args:
-          **kwargs: all arguments are passed to go_test.
-    """
-
-    # Sets test count to 3.
-    kwargs.setdefault("args", [])
-    kwargs["args"].append("--test.count=3")
-
-    # Disable test wrapper
-    kwargs.setdefault("env", {})
-    kwargs["env"]["GO_TEST_WRAP"] = "0"
-
-    ld_test(
-        **kwargs
-    )