sdbusplus: remove deprecated --enable-transaction

sdbusplus removed support for disabling transaction IDs and
deprecated the --enable-transaction configure flag.  Remove
it here as well.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ic6939d18adc5ae892d6fad9b3286a4cd979b7cdf
2 files changed