Remove -wayland/-no-wayland configure options

These options were removed from configure in
qtbase/b5b41c18345719612e5411cc482466d2dbafdaf7

  NOTICE: The -wayland and -no-wayland flags are now obsolete

  All configuring of QtWayland plugin and QtCompositor happens in the module

Change-Id: I7dd18c4684ae1d1b48ff9cb93e09902cf4ba1b41
Reviewed-by: Simo Fält <simo.falt@digia.com>