remove redundant sentence

Signed-off-by: Leah Rowe <info@minifree.org>

site/docs/hardware/dell9020.md

@@ -107,7 +107,7 @@ this error:
 
 NOTE2: You *can* use the onboard Intel GPU (without a graphics card inserted),
 and leave IOMMU turned on. You only need to disable the IOMMU when a graphics
-card is inserted. This bug will be investigated and fixed at a later date.
+card is inserted.
 
 7020 compatibility
 ------------------