tool build: Remove __get_cpuid feature test

This feature test is no longer used so remove.

The function tested by the feature test is used in:
tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
however, the Makefile just assumes the presence of the function and
doesn't perform a build feature test for it.

Signed-off-by: Ian Rogers <[e-mail]>
Reviewed-by: James Clark <[e-mail]>
Signed-off-by: Namhyung Kim <[e-mail]>

tools/build/Makefile.feature

···
         timerfd                         \
         zlib                            \
         lzma                            \
-        get_cpuid                       \
         bpf                             \
         scandirat			\
         sched_getcpu			\
···
          llvm-perf              \
          zlib                   \
          lzma                   \
-         get_cpuid              \
          bpf			\
          libaio			\
          libzstd

tools/build/feature/Makefile

···
          test-lzma.bin                          \
          test-bpf.bin                           \
          test-libbpf.bin                        \
-         test-get_cpuid.bin                     \
          test-sdt.bin                           \
          test-cxx.bin                           \
          test-gettid.bin			\
···
 
 $(OUTPUT)test-lzma.bin:
 	$(BUILD) -llzma
-
-$(OUTPUT)test-get_cpuid.bin:
-	$(BUILD)
 
 $(OUTPUT)test-bpf.bin:
 	$(BUILD)

tools/build/feature/test-all.c

···
 # include "test-lzma.c"
 #undef main
 
-#define main main_test_get_cpuid
-# include "test-get_cpuid.c"
-#undef main
-
 #define main main_test_bpf
 # include "test-bpf.c"
 #undef main
···
 	main_test_pthread_attr_setaffinity_np();
 	main_test_pthread_barrier();
 	main_test_lzma();
-	main_test_get_cpuid();
 	main_test_bpf();
 	main_test_scandirat();
 	main_test_sched_getcpu();

tools/build/feature/test-get_cpuid.c

···
-// SPDX-License-Identifier: GPL-2.0
-#include <cpuid.h>
-
-int main(void)
-{
-	unsigned int eax = 0, ebx = 0, ecx = 0, edx = 0;
-	return __get_cpuid(0x15, &eax, &ebx, &ecx, &edx);
-}