* Remove now useless function Usage

        Continuation of issue #33

src/frontends/real/ocarina-fe_real.adb

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---       Copyright (C) 2009 Telecom ParisTech, 2010-2015 ESA & ISAE.        --
+--       Copyright (C) 2009 Telecom ParisTech, 2010-2016 ESA & ISAE.        --
 --                                                                          --
 -- Ocarina  is free software; you can redistribute it and/or modify under   --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -29,15 +29,11 @@
 --                                                                          --
 ------------------------------------------------------------------------------
 
-with Ocarina.Output;
-
 with Ocarina.FE_REAL.Parser;
 with Ocarina.ME_REAL.Tokens;
 
 package body Ocarina.FE_REAL is
 
-   use Ocarina.Output;
-
    ----------
    -- Init --
    ----------
@@ -59,18 +55,4 @@ package body Ocarina.FE_REAL is
       null;
    end Reset;
 
-   -----------
-   -- Usage --
-   -----------
-
-   procedure Usage is
-   begin
-      Write_Line
-        ("   -real_lib Add a REAL file to be used as a theorem " &
-         "library by REAL annexes");
-      Write_Line ("   -real_theorem <theorem> Evaluate only theorem");
-      Write_Line
-        ("   -real_continue_eval Continue evaluation in case of failures");
-   end Usage;
-
 end Ocarina.FE_REAL;

src/frontends/real/ocarina-fe_real.ads

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---       Copyright (C) 2009 Telecom ParisTech, 2010-2015 ESA & ISAE.        --
+--       Copyright (C) 2009 Telecom ParisTech, 2010-2016 ESA & ISAE.        --
 --                                                                          --
 -- Ocarina  is free software; you can redistribute it and/or modify under   --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -37,6 +37,4 @@ package Ocarina.FE_REAL is
    procedure Reset;
    --  Resets the parser
 
-   procedure Usage;
-
 end Ocarina.FE_REAL;