Removes all references to the SSTATE_HASHEQUIV_SERVER variable. This
variable is redundant now that BB_HASHSERVE is present.
(From OE-Core rev: 54b3adb6bc90a8e4b9e92952688772ee074d36e5)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>