mips: remove ISA choice

We don't add cpu specific CFLAGS to the build, so the
ISA config symbols for MIPS are noops.
Simple remove them.

Reported-By: Bryan Hundven <bryanhundven@gmail.com>

extra/Configs/Config.mips

@@ -31,48 +31,3 @@ config CONFIG_MIPS_N64_ABI
 	bool "N64 ABI"
 
 endchoice
-
-choice
-	prompt "Target Processor Architecture"
-	default CONFIG_MIPS_ISA_1 if CONFIG_MIPS_O32_ABI
-	default CONFIG_MIPS_ISA_3 if CONFIG_MIPS_N32_ABI
-	default CONFIG_MIPS_ISA_3 if CONFIG_MIPS_N64_ABI
-	help
-	  This selects the instruction set architecture of your MIPS CPU. This
-	  information is used for optimizing purposes. To build a library that
-	  will run on any MIPS CPU, you can specify "Generic (MIPS I)" here.
-	  If you pick anything other than "Generic (MIPS I)," there is no
-	  guarantee that uClibc will even run on anything other than the
-	  selected processor type.
-
-	  You should probably select the MIPS ISA that best matches the
-	  CPU you will be using on your device. uClibc will be tuned
-	  for that architecture.
-
-	  If you don't know what to do, choose "Generic (MIPS I)"
-
-config CONFIG_MIPS_ISA_1
-	bool "Generic (MIPS I)"
-
-config CONFIG_MIPS_ISA_2
-	bool "MIPS II"
-
-config CONFIG_MIPS_ISA_3
-	bool "MIPS III"
-
-config CONFIG_MIPS_ISA_4
-	bool "MIPS IV"
-
-config CONFIG_MIPS_ISA_MIPS32
-	bool "MIPS32"
-
-config CONFIG_MIPS_ISA_MIPS32R2
-	bool "MIPS32r2"
-
-config CONFIG_MIPS_ISA_MIPS64
-	bool "MIPS64"
-
-config CONFIG_MIPS_ISA_MIPS64R2
-	bool "MIPS64r2"
-
-endchoice

test/math/Makefile.in

@@ -35,7 +35,7 @@ $(MDEPS): libm-test.c
 
 ULP_SUFFIX :=
 ifeq ($(TARGET_ARCH),mips)
-ULP_SUFFIX:=$(if $(CONFIG_MIPS_ISA_MIPS64R1)$(CONFIG_MIPS_ISA_MIPS64R2),64,32)
+ULP_SUFFIX:=$(if $(CONFIG_MIPS_N64_ABI),64,32)
 endif
 
 TARGET_ULP := $(if $(wildcard libm-test-ulps-$(TARGET_ARCH)$(ULP_SUFFIX)),$(TARGET_ARCH)$(ULP_SUFFIX),generic)