gpio-naming: Remove FSI pins

While these are GPIOs that are part of the BMC, they are never exposed
to userspace as such. We have an upstream kernel driver that manages
them.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Change-Id: I98ad5282ad4d07f4183443e6fa01f6290e2aed58
diff --git a/designs/device-tree-gpio-naming.md b/designs/device-tree-gpio-naming.md
index 763d3ab..afabd44 100644
--- a/designs/device-tree-gpio-naming.md
+++ b/designs/device-tree-gpio-naming.md
@@ -110,17 +110,6 @@
 ### POWER Specific GPIO's
 Below are GPIO names specific to the POWER processor based servers.
 
-#### FSI
-Pattern: `fsi-*`
-
-Defined:
-- fsi-mux
-- fsi-enable
-- fsi-trans
-- fsi-clock
-- fsi-data
-- fsi-routing
-
 #### Special
 These are special case and/or grandfathered in pin names.