evas: recycling of resources (deleted mine and eagle) in Evas_3D examples.

evas: recycling of resources (deleted mine and eagle) in Evas_3D examples.

Summary:
Unneccessary resources are deleted.
In example of frustum used sweet_home.
In example of colorpick used sphere primitive.
Possibility to set precision of spheres deletes need in high quality mesh.
For spheres used textures of wood and rock, so for good work of colorpick https://phab.enlightenment.org/D2044 should be merged firstly.

Reviewers: cedric, raster, Hermet

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D2081

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>