staging: vt6655: Remove declaration of s_vCalculateOFDMRParameter

Remove declaration of s_vCalculateOFDMRParameter as definition
follows just behind.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/d2d6cd4a8888e4606255276b4f86e2c11487a3a2.1661666677.git.philipp.g.hortmann@gmail.com


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