ARM: rmobile: beacon: Remove duplicated for RZ/G2 M/N/H

Now that TARGET_BEACON_RZG2M can handle all the work that
was done with TARGET_BEACON_RZG2N and TARGET_BEACON_RZG2H,
remove them since they just create more duplicate code.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/arch/arm/mach-rmobile/Kconfig.64 b/arch/arm/mach-rmobile/Kconfig.64
index 6a6dafc..d76c3a7 100644
--- a/arch/arm/mach-rmobile/Kconfig.64
+++ b/arch/arm/mach-rmobile/Kconfig.64
@@ -83,14 +83,8 @@
 	prompt "Renesas ARM64 SoCs board select"
 	optional
 
-config TARGET_BEACON_RZG2H
-	bool "Beacon EmbeddedWorks RZ/G2H Dev Kit"
-	select R8A774E1
-	select RZ_G2
-	select PINCTRL_PFC_R8A774E1
-
 config TARGET_BEACON_RZG2M
-	bool "Beacon EmbeddedWorks RZ/G2M Dev Kit"
+	bool "Beacon EmbeddedWorks RZ/G2 Dev Kit"
 	select R8A774A1
 	select R8A774B1
 	select R8A774E1
@@ -101,12 +95,6 @@
 	imply MULTI_DTB_FIT
 	imply MULTI_DTB_FIT_USER_DEFINED_AREA
 
-config TARGET_BEACON_RZG2N
-	bool "Beacon EmbeddedWorks RZ/G2N Dev Kit"
-	select R8A774B1
-	select RZ_G2
-	select PINCTRL_PFC_R8A774B1
-
 config TARGET_CONDOR
 	bool "Condor board"
 	imply R8A77980