8485 Remove set but unused variables in usr/src/cmd

*** 18,27 ****
--- 18,28 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
+  * Copyright 2017 Gary Mills
   * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
*** 199,213 ****
  }
  
  
  tchar setht()           /* set character height from \H'...' */
  {
-         int     n;
          tchar c;
  
          getch();
!         n = inumb(&apts);
          getch();
          return(0);
  }
  
  
--- 200,213 ----
  }
  
  
  tchar setht()           /* set character height from \H'...' */
  {
          tchar c;
  
          getch();
!         (void) inumb(&apts);
          getch();
          return(0);
  }