include: remove internal definition that are now in libosmocore

Still in one separate patch for libosmocore, but they may become
part of mainline soon.
diff --git a/src/input/lapd.c b/src/input/lapd.c
index c8b777c..6c070e3 100644
--- a/src/input/lapd.c
+++ b/src/input/lapd.c
@@ -43,6 +43,7 @@
 #include <talloc.h>
 #include <osmocom/core/msgb.h>
 #include <osmocom/core/timer.h>
+#include <osmocom/abis/logging.h>
 
 #define SABM_INTERVAL		0, 300000