m4: virt-driver-libxl: remove Fedora 28 check

Signed-off-by: NPavel Hrdina <phrdina@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

m4/virt-driver-libxl.m4

@@ -36,23 +36,6 @@ AC_DEFUN([LIBVIRT_DRIVER_CHECK_LIBXL], [
     LIBXL_EXECBIN_DIR=$($PKG_CONFIG --variable libexec_bin xenlight)
   fi
 
-  dnl In Fedora <= 28, the xenlight pkgconfig file is in the -runtime package
-  dnl https://bugzilla.redhat.com/show_bug.cgi?id=1629643
-  dnl Until Fedora 28 reaches EOL, fallback to lib probe if xenlight.pc is
-  dnl not found
-  if test "x$with_libxl" = "xno" ; then
-    with_libxl="$old_with_libxl"
-
-    save_CFLAGS="$CFLAGS"
-    CFLAGS="$CFLAGS $LIBXL_API_VERSION"
-    LIBVIRT_CHECK_LIB([LIBXL], [xenlight], [libxl_cpupool_cpuadd_cpumap], [libxl.h], [fail="1"])
-    CFLAGS="$save_CFLAGS"
-
-    if test $fail = 1; then
-      AC_MSG_ERROR([You must install the libxl Library from Xen >= 4.6 to compile libxenlight driver with -lxl])
-    fi
-  fi
-
   if test "$with_libxl" = "yes"; then
     LIBXL_CFLAGS="$LIBXL_CFLAGS $LIBXL_API_VERSION"