Remove Clutter and Cogl

Clutter and Cogl are not used by anything in oe-core, and in Gnome are
legacy components so are only used by a few applications.  The recipes
have already been moved to meta-gnome so they can now be removed from
oe-core.

(From OE-Core rev: c4f167d05f58f35a6b94e8dbc4721ab67e7e71eb)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/clutter.bbclass

@@ -1,18 +0,0 @@
-def get_minor_dir(v):
-    import re
-    m = re.match(r"^([0-9]+)\.([0-9]+)", v)
-    return "%s.%s" % (m.group(1), m.group(2))
-
-def get_real_name(n):
-    import re
-    m = re.match(r"^([a-z]+(-[a-z]+)?)(-[0-9]+\.[0-9]+)?", n)
-    return "%s" % (m.group(1))
-
-VERMINOR = "${@get_minor_dir("${PV}")}"
-REALNAME = "${@get_real_name("${BPN}")}"
-
-SRC_URI = "${GNOME_MIRROR}/${REALNAME}/${VERMINOR}/${REALNAME}-${PV}.tar.xz;name=archive"
-S = "${WORKDIR}/${REALNAME}-${PV}"
-
-CLUTTERBASEBUILDCLASS ??= "autotools"
-inherit ${CLUTTERBASEBUILDCLASS} pkgconfig gtk-doc gettext