remove DLRSL and DLNM, we don't need them

They are not used anywhere in our libraries, so they should be defined
by the respective applications
diff --git a/include/osmocom/core/logging.h b/include/osmocom/core/logging.h
index 20c1254..06d90e5 100644
--- a/include/osmocom/core/logging.h
+++ b/include/osmocom/core/logging.h
@@ -43,9 +43,7 @@
 #define DLMUX		-4
 #define DLMI		-5
 #define DLMIB		-6
-#define DLRSL		-7
-#define DLNM		-8
-#define OSMO_NUM_DLIB	9
+#define OSMO_NUM_DLIB	7
 
 struct log_category {
 	uint8_t loglevel;