sysdev/kernel: DT: Drop a detail about DT support

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

slides/sysdev-kernel-building/sysdev-kernel-building.tex

@@ -533,8 +533,7 @@ \subsection{Booting the kernel}
     or using a special hardware description language in a {\em Device Tree}.
   \item The Device Tree (DT) was created for PowerPC, and later was
     adopted by other architectures (ARM, ARC...). Now Linux
-    has DT support in most architectures, at least for specific
-    systems (for example for the OLPC on x86).
+    has DT support in most architectures.
   \end{itemize}
 \end{frame}