egl: remove duplicate 0 assignment

The memset on the line before already takes care of this.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/egl/main/eglimage.c

@@ -46,9 +46,6 @@ _eglParseImageAttribList(_EGLImageAttribs *attrs, _EGLDisplay *dpy,
    (void) dpy;
 
    memset(attrs, 0, sizeof(*attrs));
-   attrs->ImagePreserved = EGL_FALSE;
-   attrs->GLTextureLevel = 0;
-   attrs->GLTextureZOffset = 0;
 
    if (!attrib_list)
       return err;