ppc: Remove gdsys strider boards

These boards have not been converted to CONFIG_DM_MMC, along with other
DM conversions, by the deadline.  Remove them.

Cc: Dirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/gdsys/mpc8308/Kconfig b/board/gdsys/mpc8308/Kconfig
index 3081188..1c33f0c 100644
--- a/board/gdsys/mpc8308/Kconfig
+++ b/board/gdsys/mpc8308/Kconfig
@@ -52,25 +52,6 @@
 
 endif
 
-if TARGET_STRIDER
-
-config SYS_BOARD
-	default "mpc8308"
-
-config SYS_VENDOR
-	default "gdsys"
-
-config SYS_CONFIG_NAME
-	default "strider"
-
-config GDSYS_LEGACY_OSD_CMDS
-	default y
-
-config GDSYS_LEGACY_DRIVERS
-	default y
-
-endif
-
 if TARGET_GAZERBEAM
 
 config SYS_BOARD
@@ -92,7 +73,7 @@
 	default y
 endif
 
-if TARGET_HRCON || TARGET_STRIDER || TARGET_GAZERBEAM
+if TARGET_HRCON || TARGET_GAZERBEAM
 
 choice
 	prompt "FPGA flavor selection"