perf build: Remove unused feature test target

llvm-version was removed in commit 56b11a21 ("perf bpf: Remove
support for embedding clang for compiling BPF events (-e foo.c)") but
some parts were left in the Makefile so finish removing them.
Signed-off-by: James Clark <james.clark@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Daniel Wagner <dwagner@suse.de>
Cc: Guilherme Amadio <amadio@gentoo.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@arm.com>
Cc: Manu Bretelle <chantr4@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Monnet <qmo@kernel.org>
Cc: Steinar H. Gunderson <sesse@google.com>
Link: https://lore.kernel.org/r/20240910140405.568791-2-james.clark@linaro.org
[ Removed one leftover, 'llvm-version' from FEATURE_TESTS_EXTRA ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/build/Makefile.feature

@@ -100,7 +100,6 @@ FEATURE_TESTS_EXTRA :=                  \
          libunwind-debug-frame-aarch64  \
          cxx                            \
          llvm                           \
-         llvm-version                   \
          clang                          \
          libbpf                         \
          libbpf-btf__load_from_kernel_by_id \

tools/build/feature/Makefile

@@ -74,7 +74,6 @@ FILES=                                          \
          test-clang.bin				\
          test-llvm.bin				\
          test-llvm-perf.bin   \
-         test-llvm-version.bin			\
          test-libaio.bin			\
          test-libzstd.bin			\
          test-clang-bpf-co-re.bin		\
@@ -397,11 +396,6 @@ $(OUTPUT)test-llvm-perf.bin:
 		$(shell $(LLVM_CONFIG) --system-libs)		\
 		> $(@:.bin=.make.output) 2>&1
 
-$(OUTPUT)test-llvm-version.bin:
-	$(BUILDXX) -std=gnu++17					\
-		-I$(shell $(LLVM_CONFIG) --includedir)		\
-		> $(@:.bin=.make.output) 2>&1
-
 $(OUTPUT)test-clang.bin:
 	$(BUILDXX) -std=gnu++17					\
 		-I$(shell $(LLVM_CONFIG) --includedir) 		\