Revert "Make http_archive honor $HOME/.netrc"

This reverts commit c26e339.

Work on bazelbuild#9327.

src/test/shell/bazel/skylark_repository_test.sh

@@ -1852,41 +1852,4 @@ EOF
       || fail "Expected success despite needing a file behind basic auth"
 }
 
-function test_implicit_netrc() {
-  mkdir x
-  echo 'exports_files(["file.txt"])' > x/BUILD
-  echo 'Hello World' > x/file.txt
-  tar cvf x.tar x
-  sha256=$(sha256sum x.tar | head -c 64)
-  serve_file_auth x.tar
-
-  export HOME=`pwd`
-  cat > .netrc <<'EOF'
-machine 127.0.0.1
-login foo
-password bar
-EOF
-
-  mkdir main
-  cd main
-  cat > WORKSPACE <<EOF
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-http_archive(
-  name="ext",
-  url = "http://127.0.0.1:$nc_port/x.tar",
-  sha256="$sha256",
-)
-EOF
-  cat > BUILD <<'EOF'
-genrule(
-  name = "it",
-  srcs = ["@ext//x:file.txt"],
-  outs = ["it.txt"],
-  cmd = "cp $< $@",
-)
-EOF
-  bazel build //:it \
-      || fail "Expected success despite needing a file behind basic auth"
-}
-
 run_suite "local repository tests"

tools/build_defs/repo/http.bzl

@@ -45,15 +45,7 @@ def _get_auth(ctx, urls):
         netrc = read_netrc(ctx, ctx.attr.netrc)
         return use_netrc(netrc, urls)
 
-    if "HOME" in ctx.os.environ:
-        if not ctx.os.name.startswith("windows"):
-            netrcfile = "%s/.netrc" % (ctx.os.environ["HOME"],)
-            if ctx.execute(["test", "-f", netrcfile]).return_code == 0:
-                netrc = read_netrc(ctx, netrcfile)
-                return use_netrc(netrc, urls)
-
-        # TODO: Search at a similarly canonical place for Windows as well
-
+    # TODO: use ~/.netrc instead, if it exists and is readable
     return {}
 
 def _http_archive_impl(ctx):