msm: acpuclock-8x60: Drop "slowest" frequency table

The voltage data in this table is not used. It applied only to
a handful of internal part samples that were never distributed.
Remove it, since it is neither maintained nor useful.

Change-Id: I2a08bd0287a400cfb65666dc3445fd5441d784d1
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>