dev-libs/libtracefs: remove unused patch(es)

Signed-off-by: Michael Mair-Keimberger <mm1ke@gentoo.org>

dev-libs/libtracefs/files/libtracefs-1.8.0-mmap.patch

@@ -1,25 +0,0 @@
-Subject: [PATCH] libtracefs meson: build tracefs-mmap by default
-
-Accordingly to Makefile let's add tracefs-mmap.c to build, this is needed
-for linking by other object files.
-
-Link: https://lore.kernel.org/linux-trace-devel/20240110203925.266999-1-giulio.benetti@benettiengineering.com
----
- src/meson.build | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/src/meson.build b/src/meson.build
-index 5b76554..f7a98b9 100644
---- a/src/meson.build
-+++ b/src/meson.build
-@@ -11,6 +11,7 @@ sources= [
-    'tracefs-instance.c',
-    'tracefs-kprobes.c',
-    'tracefs-marker.c',
-+   'tracefs-mmap.c',
-    'tracefs-record.c',
-    'tracefs-sqlhist.c',
-    'tracefs-tools.c',
--- 
-2.43.0
-