Revert "Fix log level "everything" and make it equal to "debug""

This reverts commit cd6ed82d1ff48f47ad9e33e6322df62896a76ed5.
diff --git a/src/logging.c b/src/logging.c
index ffe6ecf..995fcd7 100644
--- a/src/logging.c
+++ b/src/logging.c
@@ -55,7 +55,7 @@
 #define LOGLEVEL_DEFS	6	/* Number of loglevels.*/
 
 static const struct value_string loglevel_strs[LOGLEVEL_DEFS+1] = {
-	{ LOGL_DEBUG,	"EVERYTHING" },	/* backwards compatibility */
+	{ 0,		"EVERYTHING" },
 	{ LOGL_DEBUG,	"DEBUG" },
 	{ LOGL_INFO,	"INFO" },
 	{ LOGL_NOTICE,	"NOTICE" },