wl_desktop_shell: Added shell_surface_destroy API for destroying all surfaces
wl_desktop_shell: Added shell_surface_destroy API for destroying all surfaces

Summary:
shell_surface_destroy function is a common destroy function to destroy all type of surfaces and to remove redundancy in code

Signed-off-by: vivek <vivek.ellur@samsung.com>

Reviewers: devilhorns

Reviewed By: devilhorns

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D1421

rvandegrift/e,FlorentRevest/Enlightenment,tasn/enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,tasn/enlightenment,tasn/enlightenment,tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment,rvandegrift/e,FlorentRevest/Enlightenment