staging: r8188eu: remove odm hct test info

The "in hct test" variable is never set, it's always 0.

Remove the variable and fix up the one place where it was used.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20211010175204.24029-8-martin@kaiser.cx


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