don't run generate-sbus-code

Upstream-Status: Inappropriate [OE Specific]

Signed-off-by: Armin Kuster <akuster808@gmail.com>

Index: sssd-2.7.1/Makefile.am
===================================================================
--- sssd-2.7.1.orig/Makefile.am
+++ sssd-2.7.1/Makefile.am
@@ -1023,8 +1023,6 @@ generate-sbus-code:
 
 .PHONY: generate-sbus-code
 
-BUILT_SOURCES += generate-sbus-code
-
 EXTRA_DIST += \
     sbus_generate.sh.in \
     src/sbus/codegen/dbus.xml \