debug.h/c: remove unused cruft / cosmetic tweaks

Change-Id: I9601d478763569933bcc46bf4eaaff70a9843be9
diff --git a/openbsc/include/openbsc/debug.h b/openbsc/include/openbsc/debug.h
index ca00fe9..6300020 100644
--- a/openbsc/include/openbsc/debug.h
+++ b/openbsc/include/openbsc/debug.h
@@ -1,5 +1,4 @@
-#ifndef _DEBUG_H
-#define _DEBUG_H
+#pragma once
 
 #include <stdio.h>
 #include <osmocom/core/linuxlist.h>
@@ -41,17 +40,8 @@
 	Debug_LastEntry,
 };
 
-/* we don't need a header dependency for this... */
-struct gprs_nsvc;
-struct bssgp_bvc_ctx;
 struct gsm_subscriber;
 
 void log_set_imsi_filter(struct log_target *target, struct gsm_subscriber *subscr);
-void log_set_nsvc_filter(struct log_target *target,
-			 struct gprs_nsvc *nsvc);
-void log_set_bvc_filter(struct log_target *target,
-			struct bssgp_bvc_ctx *bctx);
 
 extern const struct log_info log_info;
-
-#endif /* _DEBUG_H */
diff --git a/openbsc/src/libcommon/debug.c b/openbsc/src/libcommon/debug.c
index 51fbb93..3f3232c 100644
--- a/openbsc/src/libcommon/debug.c
+++ b/openbsc/src/libcommon/debug.c
@@ -177,8 +177,7 @@
 	},
 };
 
-static int filter_fn(const struct log_context *ctx,
-		     struct log_target *tar)
+static int filter_fn(const struct log_context *ctx, struct log_target *tar)
 {
 	const struct gsm_subscriber *subscr = ctx->ctx[LOGGING_CTX_VLR_SUBSCR];
 	const struct gprs_nsvc *nsvc = ctx->ctx[LOGGING_CTX_GB_NSVC];