Alan Coopersmith authored May 12, 2024 and Marge Bot committed May 18, 2024

Mostly done via unifdef -UUSE_XAA, followed by minor manual editing

Since recent commits require xserver-1.18.0 or later to build against,
there's no reason leaving behind big chunks of code that can only build
against the XAA support removed in xserver-1.13.0 (released in 2012).

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <!15>