ASoC: fsl: fsl_asrc: remove useless assignment

cppcheck warning:

sound/soc/fsl/fsl_asrc.c:613:8: style: Variable 'i' is assigned a
value that is never used. [unreadVariable]
 int i = 0, j = 0;
       ^

The same issue occurs for the 'j' variable.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210219232937.6440-2-pierre-louis.bossart@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>