[clutter] docs: Remove unused cogl-2.0 directory

[Emmanuele Bassi <ebassi src gnome org>]

commit 2a56cc799ae53550167c63d332dedb79607b0cd7
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Mon Sep 12 13:05:16 2011 +0100

    docs: Remove unused cogl-2.0 directory
    
    The Cogl API reference has long since moved out of the Clutter tree.

 doc/reference/cogl-2.0/Makefile.am                |  142 ------
 doc/reference/cogl-2.0/blend-strings.xml          |  129 ------
 doc/reference/cogl-2.0/cogl-docs.xml.in           |  194 --------
 doc/reference/cogl-2.0/cogl-sections.txt          |  484 ---------------------
 doc/reference/cogl-2.0/cogl_ortho.png             |  Bin 12650 -> 0 bytes
 doc/reference/cogl-2.0/fill-rule-even-odd.png     |  Bin 3121 -> 0 bytes
 doc/reference/cogl-2.0/fill-rule-non-zero.png     |  Bin 3143 -> 0 bytes
 doc/reference/cogl-2.0/quad-indices-order.png     |  Bin 2620 -> 0 bytes
 doc/reference/cogl-2.0/quad-indices-triangles.png |  Bin 8018 -> 0 bytes
 9 files changed, 0 insertions(+), 949 deletions(-)