Remove unnecessary files and references (#33)

Author: pcj

node/BUILD

@@ -1,5 +1 @@
 package(default_visibility = ["//visibility:public"])
-
-exports_files([
-    "internal/node_launcher.sh",
-])

node/internal/node_binary.bzl

@@ -1,4 +1,4 @@
-load("@bazel_tools//tools/build_defs/pkg:pkg.bzl", "pkg_tar", "pkg_deb")
+load("@bazel_tools//tools/build_defs/pkg:pkg.bzl", "pkg_tar")
 load("//node:internal/node_module.bzl", "node_module")
 
 _node_filetype = FileType(['.js', '.node'])

node/internal/node_module.bzl

@@ -1,5 +1,3 @@
-# https://nodejs.org/api/modules.html#modules_folders_as_modules
-
 _node_filetype = FileType([".js", ".node"])
 
 def _relname(ctx, root_file, file):

node/internal/node_utils.bzl

@@ -1,5 +1,8 @@
-load("//node:internal/sha256.bzl", "sha256_attrs", "sha256_execute")
-load("//node:internal/node_utils.bzl", "execute")
+def execute(ctx, cmds, **kwargs):
+    result = ctx.execute(cmds, **kwargs)
+    if result.return_code:
+        fail(" ".join(cmds) + "failed: \nSTDOUT:\n%s\nSTDERR:\n%s" % (result.stdout, result.stderr))
+    return result
 
 def _create_package_json_content(ctx):
     content = {