ramlog: Remove g_ramlog_syslog_channel since it's same as g_default_channel

And remove syslog_init_e because all initialization is later now and we don't
distinguish the initialition phase anymore after ramlog don't need special
initialize.

arch/x86/src/common/up_initialize.c

@@ -49,7 +49,6 @@
 #include <nuttx/net/loopback.h>
 #include <nuttx/net/tun.h>
 #include <nuttx/net/telnet.h>
-#include <nuttx/syslog/syslog.h>
 #include <nuttx/syslog/syslog_console.h>
 #include <nuttx/serial/pty.h>
 #include <nuttx/crypto/crypto.h>
@@ -165,13 +164,6 @@ void up_initialize(void)
   ptmx_register();
 #endif
 
-  /* Early initialization of the system logging device.  Some SYSLOG channel
-   * can be initialized early in the initialization sequence because they
-   * depend on only minimal OS initialization.
-   */
-
-  syslog_initialize(SYSLOG_INIT_EARLY);
-
 #if defined(CONFIG_CRYPTO)
   /* Initialize the HW crypto and /dev/crypto */