Remove CMake from Drake automotive.

[Agustin Alba Chicar]

From a conversation with Drake's team, we conclude to remove CMake structure from the automotive section of the repository.

This task is needed as RNDF implementation depends on ignition-math and ignition-rndf which are Mercurial repositories and cannot be easily imported as git-submodules. In addition, they've already planned the CMake removal so this will trigger the change.

[Agustin Alba Chicar]

Removed CMakeLists.txt from the drake/automotive directory.

Current work is being done in branch Issue/Remove_CMake_from_automotive

[Agustin Alba Chicar]

The PR was made and can be found here: https://github.com/RobotLocomotion/drake/pull/5932

[Agustin Alba Chicar]

There is already an issue that discuss this topic in Drake that discuss this topic. The general stated conclusions were:

• Everything that can be done in both Bazel and CMake should be duplicated.
• automotive/README.md should contain only Bazel related demos and tests.

[Agustin Alba Chicar]

From the discussion in the PR, issue #126 has been created and the PR is going to be cancelled for now.