Remove useless warnings

These warnings give zero value to the user, because they don't specify
what went wrong. Moreover, the severity of the message depends on the
parameters of the macro. For example, in environemntvariable58 probe the
macro is used in a way that "Entity has no value" is a valid and
expected situation, because if the pid element is set to xsi:nil the PID
should be set to the PID of the calling process.

Resolves: RHBZ#1764139

Author: jan-cerny

src/OVAL/probes/public/probe-api.h

@@ -488,11 +488,9 @@ OSCAP_API SEXP_t *probe_item_create(oval_subtype_t item_subtype, probe_elmatr_t
 		SEXP_t *___r;					\
 								\
 		if ((___r = probe_ent_getval(ent)) == NULL) {	\
-			dW("Entity has no value!");		\
 			invalid_exp				\
 		} else {					\
 			if (!SEXP_stringp(___r)) {		\
-				dE("Invalid type");		\
 				SEXP_free(___r);		\
 				invalid_exp			\
 			}					\
@@ -511,11 +509,9 @@ OSCAP_API SEXP_t *probe_item_create(oval_subtype_t item_subtype, probe_elmatr_t
 		SEXP_t *___r;					\
 								\
 		if ((___r = probe_ent_getval(ent)) == NULL) {	\
-			dW("Entity has no value!");		\
 			nil_exp;				\
 		} else {					\
 			if (!SEXP_numberp(___r)) {		\
-				dE("Invalid type");		\
 				SEXP_free(___r);		\
 				invalid_exp;			\
 			} else {				\