Windows: Fix TensorFlow Bazel build (#8426)

* Windows: Remove explict reference to nodejs binary

@org_nodejs//:bin/node doesn't work on Windows, since it's supposed to
be @org_nodejs//:node.exe

* Windows: Fix Bazel build after #8217

1. Use COMPILER_MSVC instead of PLATFORM_WINDOWS, because the latter one
is only defined in tf_copts. Some targets don't have tf_copts will fail to
build, eg. //tensorflow/core/distributed_runtime/rpc:grpc_remote_master

2. Add TF_COMPILE_LIBRARY in tf_copts

* Windows: Fix the pip package dependencies in Bazel build

1. Remove some targets that doesn't build yet.
2. After https://github.com/bazelbuild/bazel/issues/2088 is fixed,
   //tensorflow/tensorboard is buildable now.

* Windows: Remove python tests than are already deleted from bazel_test_lib.sh