libcacard: link vscclient to dynamic library

There is no reason for vscclient to duplicate the code.  rules.mak
takes care of invoking libtool to do the link.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

libcacard/Makefile

@@ -11,8 +11,7 @@ $(libcacard-obj-y): | $(libcacard-lobj-y)
 
 all: libcacard.la libcacard.pc
 
-vscclient$(EXESUF): LIBS += $(libcacard_libs)
-vscclient$(EXESUF): libcacard/vscclient.o $(libcacard-obj-y)
+vscclient$(EXESUF): libcacard/vscclient.o libcacard.la
 	$(call LINK,$^)
 
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