Default Logging Support (#1054)

* Add support for NCP passing logs up in the SPINEL_PROP_STREAM_DEBUG command.

include/cli/cli-uart.h

@@ -37,7 +37,6 @@
 
 #include <stdarg.h>
 #include <openthread-types.h>
-#include <platform/logging.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -51,19 +50,6 @@ extern "C" {
  */
 void otCliUartInit(otInstance *aInstance);
 
-#if OPENTHREAD_ENABLE_CLI_LOGGING
-/**
- * This method delivers formatted log to the client.
- *
- * @param[in]  aLogLevel   The log level.
- * @param[in]  aLogRegion  The log region.
- * @param[in]  aFormat     A pointer to the format string.
- * @param[in]  aAp         Arguments pointer for the format specification.
- *
- */
-void otCliLog(otLogLevel aLogLevel, otLogRegion aLogRegion, const char *aFormat, va_list aAp);
-#endif
-
 #ifdef __cplusplus
 }  // extern "C"
 #endif