ee_wayland_egl: Remove some amazing weirdness

ee_wayland_egl: Remove some amazing weirdness

Summary:
I don't even know what to put here, but I'll try.

wl_egl_window_resize()'s final two parameters indicate new attachment
points for a buffer relative to the previous top left corner.  When the
compositor is resizing a window it already handles the corner placement.
Fortunately, compositors seem to ignore the new attach co-ords during
resize, so this code hasn't broken anything.  It's just a complicated
NOP.

The new attachment points are intended for use in spontaneous resize,
not drag resize, but the only time these functions are called is for
drag resize.
Depends on D6119

Reviewers: zmike, cedric

Reviewed By: zmike

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D6120

Change-Id: I00722662988871502b8ee41d98ec0951b3e72451