staging: vt6656: Remove return statement of iwctl_giwrange
The function iwctl_giwrange will always return 0, and this data is not used by who calls this function. Signed-off-by: NMarcos Paulo de Souza <marcos.mage@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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