build: scripts/utilities.mak is not more used

Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

scripts/utilities.mak

-# try-cc
-# Usage: option = $(call try-cc, source-to-build, cc-options)
-try-cc = $(shell sh -c						  		\
-	'TMP="$(OUTPUT)$(TMPOUT).$$$$";				  		\
-	 echo "$(1)" |						  		\
-	 $(CC) $(DEFINES) -x c - $(2) $(3) -o "$$TMP" > /dev/null 2>&1 && echo y;	\
-	 rm -f "$$TMP"')
-
-# pkg-config-check
-# Usage: ifeq ($(call pkg-config-check, library),y)
-pkg-config-check = $(shell sh -c 'pkg-config $(1) && echo y')