[docs] Fix an inconsistent title level, and a sphinx warning.

- We don't need any static files currently, so drop that dir.

llvm-svn: 171787

clang/docs/ClangTools.rst

@@ -91,7 +91,7 @@ and features of the tools for other tool developers; each tool should
 provide its own user-focused documentation.
 
 Ideas for new Tools
--------------------
+===================
 
 * C++11 null pointer conversion tool.  Will convert all null pointer constants
   (like ``NULL`` or ``0``) to C++11 ``nullptr``.

clang/docs/conf.py

@@ -120,7 +120,7 @@ html_theme = 'haiku'
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = []
 
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.