Remove sections that try to inline API doc into the reference guide.
The RPC server code necessary for this was part of the old PHP API viewer,
but apparently it was broken a long time ago, and is not even implemented
in the new API viewer (called DAPI).

(cherry picked from commit 792d03286c4cacdc3027ce5fd60cc8f75ab01be2)

Conflicts:
	dojo/_base/lang.rst