uftrace: Get rid of a copy of libtraceevent source

It's outdated and modern distro will ship a newer version of the
library.  Let's use it instead and remove this stale copy.

Signed-off-by: Namhyung Kim <[email protected]>

Makefile

@@ -167,7 +167,7 @@ include $(srcdir)/Makefile.include
 LIBMCOUNT_TARGETS := libmcount/libmcount.so libmcount/libmcount-fast.so
 LIBMCOUNT_TARGETS += libmcount/libmcount-single.so libmcount/libmcount-fast-single.so
 
-_TARGETS := uftrace libtraceevent/libtraceevent.a python/uftrace_python.so
+_TARGETS := uftrace python/uftrace_python.so
 _TARGETS += $(LIBMCOUNT_TARGETS) libmcount/libmcount-nop.so
 _TARGETS += misc/demangler misc/symbols misc/dbginfo
 TARGETS  := $(patsubst %,$(objdir)/%,$(_TARGETS))
@@ -300,9 +300,6 @@ $(LIBMCOUNT_ARCH_OBJS): $(wildcard $(srcdir)/arch/$(ARCH)/*.[cS]) $(LIBMCOUNT_DE
 $(UFTRACE_ARCH_OBJS): $(wildcard $(srcdir)/arch/$(ARCH)/*.[cS]) $(COMMON_DEPS)
 	@$(MAKE) -B -C $(srcdir)/arch/$(ARCH) $@
 
-$(objdir)/libtraceevent/libtraceevent.a: $(wildcard $(srcdir)/libtraceevent/*.[ch]) $(objdir)/.config
-	@$(MAKE) -C $(srcdir)/libtraceevent BUILD_SRC=$(srcdir)/libtraceevent BUILD_OUTPUT=$(objdir)/libtraceevent CONFIG_FLAGS="$(TRACEEVENT_CFLAGS)"
-
 $(objdir)/uftrace.o: $(srcdir)/uftrace.c $(objdir)/version.h $(COMMON_DEPS)
 	$(QUIET_CC)$(CC) $(UFTRACE_CFLAGS) -c -o $@ $<
 
@@ -331,7 +328,7 @@ $(objdir)/version.h: PHONY
 $(srcdir)/utils/auto-args.h: $(srcdir)/misc/prototypes.h $(srcdir)/misc/gen-autoargs.py
 	$(QUIET_GEN)$(srcdir)/misc/gen-autoargs.py -i $< -o $@
 
-$(objdir)/uftrace: $(UFTRACE_OBJS) $(UFTRACE_ARCH_OBJS) $(objdir)/libtraceevent/libtraceevent.a
+$(objdir)/uftrace: $(UFTRACE_OBJS) $(UFTRACE_ARCH_OBJS)
 	$(QUIET_LINK)$(CC) $(UFTRACE_CFLAGS) -o $@ $(UFTRACE_OBJS) $(UFTRACE_ARCH_OBJS) $(UFTRACE_LDFLAGS)
 
 $(objdir)/misc/demangler: $(DEMANGLER_OBJS)
@@ -442,7 +439,6 @@ clean:
 	@$(MAKE) -sC $(srcdir)/arch/$(ARCH) clean
 	@$(MAKE) -sC $(srcdir)/tests ARCH=$(ARCH) clean
 	@$(MAKE) -sC $(docdir) clean
-	@$(MAKE) -sC $(srcdir)/libtraceevent BUILD_SRC=$(srcdir)/libtraceevent BUILD_OUTPUT=$(objdir)/libtraceevent CONFIG_FLAGS="$(TRACEEVENT_CFLAGS)" clean
 
 reset-coverage:
 	$(Q)find -name "*\.gcda" | xargs $(RM)