vala.bbclass: move from meta-efl to meta-oe as libcanberra_0.26.bb is also using it

(From meta-openembedded rev: dc4339fae98fa38dfee39b74f52ba7407e600809)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>

diff --git a/meta-openembedded/meta-efl/classes/vala.bbclass b/meta-openembedded/meta-oe/classes/vala.bbclass
similarity index 100%
rename from meta-openembedded/meta-efl/classes/vala.bbclass
rename to meta-openembedded/meta-oe/classes/vala.bbclass