staging: r8188eu: efuse_WordEnableDataRead is not used

The efuse_WordEnableDataRead function is not used and can be removed.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20211125151436.5895-3-martin@kaiser.cx


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>