staging/fbtft: Remove unnecessary variable initialization

Remove the initialization of the variable "i" since it is written a few
lines later.

Signed-off-by: Len Baker <len.baker@gmx.com>
Link: https://lore.kernel.org/r/20210801085155.3170-3-len.baker@gmx.com


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