examples: api: glue: Remove comment that does not apply anymore

This comment is not true since commit 6215bd4c1f ("api: Use hashtable
function for API_env_enum").

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>

examples/api/glue.c

@@ -365,11 +365,6 @@ const char * ub_env_enum(const char *last)
 
 	env = NULL;
 
-	/*
-	 * It's OK to pass only the name piece as last (and not the whole
-	 * 'name=val' string), since the API_ENUM_ENV call uses env_match()
-	 * internally, which handles such case
-	 */
 	if (!syscall(API_ENV_ENUM, NULL, last, &env))
 		return NULL;