This patch deletes a couple of superfluous word occurrences in the
document Documentation/unaligned-memory-access.txt.

Thanks to Sebastien Dugue for the remark about English usage.
Signed-off-by: NDmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>