ARC: remove special CFLAGS/LDFLAGS handling

Either toolchain defaults or buildsystems should provide the
architecture specific CFLAGS and LDFLAGS.

Rules.mak

@@ -508,12 +508,6 @@ ifeq ($(TARGET_ARCH),c6x)
 	CPU_LDFLAGS-y += $(CPU_CFLAGS)
 endif
 
-ifeq ($(TARGET_ARCH),arc)
-	CPU_CFLAGS-$(CONFIG_ARC_CPU_700) += -mA7
-	CPU_CFLAGS-$(CONFIG_ARC_CPU_HS) += -mcpu=archs
-	CPU_LDFLAGS-y += $(CPU_CFLAGS) -marclinux
-endif
-
 $(eval $(call check-gcc-var,$(PIEFLAG_NAME)))
 PIEFLAG := $(CFLAG_$(PIEFLAG_NAME))
 ifeq ($(PIEFLAG),)

extra/Configs/Config.arc

@@ -10,24 +10,6 @@ config FORCE_OPTIONS_FOR_ARCH
 	default y
 	select ARCH_ANY_ENDIAN
 
-choice
-	prompt "Target Processor Type"
-	default CONFIG_ARC_CPU_700
-
-config CONFIG_ARC_CPU_700
-	bool "ARC700"
-	select ARCH_HAS_MMU
-	help
-	  ARCompact ISA based ARC CPU
-
-config CONFIG_ARC_CPU_HS
-	bool "ARC-HS"
-	select ARCH_HAS_MMU
-	help
-	  Next Generation ARCv2 ISA based Processors
-
-endchoice
-
 config CONFIG_ARC_HAS_ATOMICS
 	bool "Support for LLOCK/SCOND instructions"
 	default y