sw64: remove unaligned count

Sunway inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5GFNY



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In the case of highly concurrent unaligned processing, unaligned
count may cause severe cache thrashing. However, unaligned count
is not required, so remove it to reduce cache thrashing.

Signed-off-by: Hang Xiaoqian <hangxiaoqian@wxiat.com>

Signed-off-by: Gu Zitao <guzitao@wxiat.com>