Remove lowsyslog(). The new syslog() includes all of the functionality of lowsyslog(). No longer any need for two interfaces.

include/nuttx/syslog/ramlog.h

@@ -182,12 +182,7 @@ int ramlog_syslog_channel(void);
  * Name: ramlog_putc
  *
  * Description:
- *   This is the low-level system logging interface.  The debugging/syslogging
- *   interfaces are syslog() and lowsyslog().  The difference is that
- *   the syslog() internface writes to syslog device (usually fd=1, stdout)
- *   whereas lowsyslog() uses a lower level interface that works from
- *   interrupt handlers.  This function is a a low-level interface used to
- *   implement lowsyslog() when CONFIG_RAMLOG_SYSLOG=y.
+ *   This is the low-level system logging interface.
  *
  ****************************************************************************/
 

include/nuttx/syslog/syslog.h

@@ -215,11 +215,11 @@ int syslog_flush(void);
 #endif
 
 /****************************************************************************
- * Name: _vsyslog and _lowvsyslog
+ * Name: _vsyslog
  *
  * Description:
  *   _vsyslog() handles the system logging system calls. It is functionally
- *   equivalent to vsyslog() except that the pre-process priority filtering
+ *   equivalent to vsyslog() except that the per-process priority filtering
  *   has already been performed and, hence, there is no priority argument.
  *
  *   NOTE:  The va_list parameter is passed by reference.  That is because
@@ -229,7 +229,6 @@ int syslog_flush(void);
  ****************************************************************************/
 
 int _vsyslog(FAR const IPTR char *src, FAR va_list *ap);
-int _lowvsyslog(FAR const IPTR char *src, FAR va_list *ap);
 
 #undef EXTERN
 #ifdef __cplusplus