Build libflask unconditionally since the python low-level tools

require it and it does't seem to pull in any major dependencies.

The alternative would have been to hack tools/python/setup.py to
conditionally compile the flask stuff.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

tools/Makefile

@@ -3,9 +3,7 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 SUBDIRS-y :=
 SUBDIRS-y += libxc
-ifeq ($(FLASK_ENABLE),y)
 SUBDIRS-y += flask
-endif
 SUBDIRS-y += xenstore
 SUBDIRS-y += misc
 SUBDIRS-y += examples