Remove parentheses from return statements

No reason to use "return (x);" here. Refer to the GNU coding guidelines
for details. Created using following semantic patch:

    @@
    expression expr;
    @@

    - return (expr);
    + return expr;

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

src/help.c

@@ -319,7 +319,7 @@ wanted_page (int ch)
       break;
     }
 
-  return (page);
+  return page;
 }
 
 /* Draws the help screen */