Remove dead code.

On the previous line we return if cb is Null, so testing cb is worthless.
Dead code, found by coverity.

Signed-off-by: Simo Sorce <simo@redhat.com>

skeletons/der_encoder.c

@@ -146,8 +146,8 @@ der_write_tags(asn_TYPE_descriptor_t *sd,
 
 	if(!cb) return overall_length - struct_length;
 
-	ASN_DEBUG("%s %s TL sequence (%d elements)",
-		cb?"Encoding":"Estimating", sd->name, tags_count);
+	ASN_DEBUG("Encoding %s TL sequence (%d elements)", sd->name,
+                  tags_count);
 
 	/*
 	 * Encode the TL sequence for real.