ATLANTA — The 23-year-old facing the death penalty in last year’s spa shooting rampage that killed eight people in the Atlanta area is scheduled to appear in a Fulton County courtroom Tuesday morning for a motions hearing. Robert Aaron Long admitted to the shootings after his arrest and has already been sentenced to four consecutive life sentences, plus 35 years, for killing four people and wounding a fifth at a spa in Cherokee County. Fulton County District Attorney Fani Willis is seeking the death penalty for the two shootings in Atlanta that left four others dead, setting the stage for what…