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/trau_frame.c b/src/trau_frame.c
index bf0dbd4..fc5651d 100644
--- a/src/trau_frame.c
+++ b/src/trau_frame.c
@@ -28,6 +28,7 @@
 #include <osmocom/abis/trau_frame.h>
 #include <osmocom/abis/subchan_demux.h>
 #include <osmocom/core/logging.h>
+#include <osmocom/abis/logging.h>
 
 static uint32_t get_bits(const uint8_t *bitbuf, int offset, int num)
 {