Remove redundant HAVE_TCATTR defines.

* src/s/unixware.h (HAVE_TCATTR):
* src/s/aix4-2.h (HAVE_TCATTR): Remove definitions, not needed.
systty.h defines it when HAVE_TERMIOS is defined.

src/ChangeLog

+2010-08-20  Dan Nicolaescu  <dann@ics.uci.edu>
+
+	* s/unixware.h (HAVE_TCATTR):
+	* s/aix4-2.h (HAVE_TCATTR): Remove definitions, not needed.
+	systty.h defines it when HAVE_TERMIOS is defined.
+
 2010-08-20  Eli Zaretskii  <eliz@gnu.org>
 	* dispnew.c (buffer_posn_from_coords): Fix last change for text

src/s/aix4-2.h

@@ -55,10 +55,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Special items needed to make Emacs run on this system.  */
 
-/* The following definition seems to be needed in AIX version 3.1.6.8.
-   It may not have been needed in certain earlier versions.  */
-#define HAVE_TCATTR
-
 /* AIX doesn't define this.  */
 #define unix 1
 

src/s/unixware.h

@@ -21,8 +21,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "usg5-4-common.h"
 
-/* fnf@cygnus.com says these exist.  */
-#define HAVE_TCATTR
 /* #define HAVE_GETWD  (appears to be buggy on SVR4.2) */
 #undef HAVE_GETWD