presence_xml: Makefile - remove internal libs compilation and linking

- libs are compiled in the core

src/modules/presence_xml/Makefile

@@ -36,6 +36,4 @@ ifneq ($(ICU_BUILDER),)
 	LIBS += $(shell $(ICU_BUILDER) --libs)
 endif
 
-SERLIBPATH=../../lib
-SER_LIBS+=$(SERLIBPATH)/srdb1/srdb1
 include ../../Makefile.modules