of: remove architecture CONFIG_OF definitions

now that CONFIG_OF is defined globally
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

arch/microblaze/Kconfig

@@ -126,9 +126,6 @@ config CMDLINE_FORCE
 	  Set this to have arguments from the default kernel command string
 	  override those passed by the boot loader.
 
-config OF
-	bool
-
 config PROC_DEVICETREE
 	bool "Support for device tree in /proc"
 	depends on PROC_FS

arch/powerpc/Kconfig

@@ -174,9 +174,6 @@ config ARCH_MAY_HAVE_PC_FDC
 config PPC_OF
 	def_bool y
 
-config OF
-	bool
-
 config PPC_UDBG_16550
 	bool
 	default n

arch/sparc/Kconfig

@@ -149,9 +149,6 @@ config GENERIC_GPIO
 config ARCH_NO_VIRT_TO_BUS
 	def_bool y
 
-config OF
-	bool
-
 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 	def_bool y if SPARC64