[PATCH v1] perf build: Remove libtracefs configuration

[Ian Rogers]

libtracefs isn't used by perf but not having it installed causes build
warnings. Given the library isn't used, there is no need for the
configuration or warnings so remove.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
Note, this patch was previously part of:
https://lore.kernel.org/lkml/20250823003216.733941-1-irogers@xxxxxxxxxx/
but is self contained enough that it can be merged on its own.
---
 tools/perf/Makefile.config | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 5a5832ee7b53..7bc2341295c3 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -1181,20 +1181,6 @@ ifneq ($(NO_LIBTRACEEVENT),1)
   else
     $(error ERROR: libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel and/or set LIBTRACEEVENT_DIR or build with NO_LIBTRACEEVENT=1)
   endif
-
-  ifeq ($(feature-libtracefs), 1)
-    CFLAGS +=  $(shell $(PKG_CONFIG) --cflags libtracefs)
-    LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtracefs)
-    EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtracefs)
-    LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs).0.0
-    LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
-    LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
-    LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
-    LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
-    CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
-  else
-    $(warning libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
-  endif
 endif
 
 # Among the variables below, these:
-- 
2.51.0.570.gb178f27e6d-goog