Remove ble_hs_log; use modlog instead

The host now uses the modlog package to write entries to the
`LOG_MODULE_NIMBLE_HOST` module.  It no longer calls into the log API
directly, so it doesn't need its own log anymore.

nimble/host/include/host/ble_hs_log.h

@@ -20,17 +20,16 @@
 #ifndef H_BLE_HS_LOG_
 #define H_BLE_HS_LOG_
 
-#include "log/log.h"
+#include "modlog/modlog.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 struct os_mbuf;
 
-extern struct log ble_hs_log;
-
 #define BLE_HS_LOG(lvl, ...) \
-    LOG_ ## lvl(&ble_hs_log, LOG_MODULE_NIMBLE_HOST, __VA_ARGS__)
+    MODLOG_ ## lvl(LOG_MODULE_NIMBLE_HOST, __VA_ARGS__)
 
 #define BLE_HS_LOG_ADDR(lvl, addr)                      \
     BLE_HS_LOG(lvl, "%02x:%02x:%02x:%02x:%02x:%02x",    \

nimble/host/pkg.yml

@@ -27,6 +27,7 @@ pkg.keywords:
 
 pkg.deps:
     - "@apache-mynewt-core/kernel/os"
+    - "@apache-mynewt-core/sys/log/modlog"
     - "@apache-mynewt-core/util/mem"
     - nimble
 
@@ -45,7 +46,6 @@ pkg.deps.BLE_MESH:
 pkg.req_apis:
     - ble_transport
     - console
-    - log
     - stats
 
 pkg.init: