client.c: Removed information about availability option and MAC parameter

Removed that information from the print_help() error messages.

Signed-off-by: Erik Alexandre Pucci <eap08@c3sl.ufpr.br>
Acked-by: Ricardo Tavares de Oliveira <rto07@c3sl.ufpr.br>
Signed-off-by: Danilo K. S. Yorinori <danilok@c3sl.ufpr.br>

src/client.c

@@ -117,17 +117,13 @@ void print_help(void)
     ERROR("USAGE: client URL [OPTION] [INEP] [MAC] [PROXY_");
     ERROR("HOST [PROXY_PORT [PROXY_USERID PROXY_PASSWD]]]");
     ERROR("\n\n");
-    ERROR("-a, --%s    Availability option ", AVAILABILITYOPTION);
-    ERROR("which only sends the INEP and MAC address. ");
-    ERROR("Must run with -I and -m\n");
     ERROR("-i, --%s       Inventory option ", INVENTORYOPTION);
     ERROR("which sends the XML data\n");
     ERROR("-u, --%s          Update option ", UPDATEOPTION);
-    ERROR("which check for updates\n");
+    ERROR("which checks for updates\n");
     ERROR("-l, --url=URL         URL used to connect ");
     ERROR("to the server\n");
     ERROR("-I, --inep=INEP       INEP of the school\n");
-    ERROR("-m, --mac=MAC         MAC address\n");
     ERROR("-H, --phost=host      Proxy host\n");
     ERROR("-p, --pport=port      Proxy port\n");
     ERROR("-U, --puid=userid     Proxy user id\n");