Remove base_workspace from bazel setup
Remove base_workspace from bazel setup

I also removed a couple places the documentation referred to it incorrectly.
There are still a couple of blog posts that mention it, but that seemed okay.

RELNOTES: A bazelrc with --package_path set is no longer required for Bazel to
find its tools. This also means that building //... should work to build
everything in the workspace without including Bazel's own targets.

--
MOS_MIGRATED_REVID=112604261

bazelbuild/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,bazelbuild/bazel-website,davidzchen/bazel-website,bazelbuild/bazel-website