Revert "sysclk-lwla: Add LWLA1016 bitstream files"

Revert "sysclk-lwla: Add LWLA1016 bitstream files"

This reverts commit b2daf81ca2e892b5b80ce4bc35ff5a846853b50b.

The firmware files we had in the sigrok-firmware repo are buggy in
various ways unfortunately. Drop them and refer users to the files they
can extract from the vendor software again, until we have received
updated non-buggy firmware files from the vendor that we're allowed
to redistribute.

An extraction script called sigrok-fwextract-sysclk-lwla1016 is
available from our sigrok-util repo.

Updated wiki docs are here:
http://sigrok.org/wiki/Sysclk_LWLA1016#Firmware

This fixes bug #760.