staging: r8188eu: remove constant parameter of phy_LCCalibrate_8188E

The only caller of phy_LCCalibrate_8188E sets is2t to false.
Remove this parameter and resulting dead code.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220204090941.309900-2-martin@kaiser.cx


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