RFC: remove SIGWINCH_HANDLER and SIGWINCH_HANDLER_BODY

[Tom Tromey <tromey@redhat.com>]

As far as I can tell, nothing ever defines SIGWINCH_HANDLER or
SIGWINCH_HANDLER_BODY, so the code referring to it is dead.
    
Tested by rebuilding and also grepping to make sure that it isn't
defined somewhere.  I also checked Insight.

Tom

    	* event-top.c (sigwinch_token, handle_sigwinch): Remove.
    	(async_init_signals): Update.
    	* utils.c (init_page_info): Don't use SIGWINCH_HANDLER.
    	(SIGWINCH_HANDLER_BODY): Remove.

diff --git a/gdb/event-top.c b/gdb/event-top.c
index 52e7852..b4a6790 100644
--- a/gdb/event-top.c
+++ b/gdb/event-top.c
@@ -58,9 +58,6 @@ static void handle_sigquit (int sig);
 static void handle_sighup (int sig);
 #endif
 static void handle_sigfpe (int sig);
-#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
-static void handle_sigwinch (int sig);
-#endif
 
 /* Functions to be invoked by the event loop in response to
    signals.  */
@@ -134,9 +131,6 @@ void *sighup_token;
 void *sigquit_token;
 #endif
 void *sigfpe_token;
-#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
-void *sigwinch_token;
-#endif
 #ifdef STOP_SIGNAL
 void *sigtstp_token;
 #endif
@@ -769,11 +763,6 @@ async_init_signals (void)
   sigfpe_token =
     create_async_signal_handler (async_float_handler, NULL);
 
-#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
-  signal (SIGWINCH, handle_sigwinch);
-  sigwinch_token =
-    create_async_signal_handler (SIGWINCH_HANDLER, NULL);
-#endif
 #ifdef STOP_SIGNAL
   sigtstp_token =
     create_async_signal_handler (async_stop_sig, NULL);
@@ -950,17 +939,6 @@ async_float_handler (gdb_client_data arg)
      divide by zero causes this, so "float" is a misnomer.  */
   error (_("Erroneous arithmetic operation."));
 }
-
-/* Tell the event loop what to do if SIGWINCH is received.
-   See event-signal.c.  */
-#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
-static void
-handle_sigwinch (int sig)
-{
-  mark_async_signal_handler_wrapper (sigwinch_token);
-  signal (sig, handle_sigwinch);
-}
-#endif
 \f
 
 /* Called by do_setshow_command.  */
diff --git a/gdb/utils.c b/gdb/utils.c
index 607d7bc..b9e76ab 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -1714,11 +1714,6 @@ init_page_info (void)
 	  lines_per_page = UINT_MAX;
 	}
 
-      /* FIXME: Get rid of this junk.  */
-#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
-      SIGWINCH_HANDLER (SIGWINCH);
-#endif
-
       /* If the output is not a terminal, don't paginate it.  */
       if (!ui_file_isatty (gdb_stdout))
 	lines_per_page = UINT_MAX;
@@ -2743,11 +2738,6 @@ When set, debugging messages will be marked with seconds and microseconds."),
 			   &setdebuglist, &showdebuglist);
 }
 
-/* Machine specific function to handle SIGWINCH signal.  */
-
-#ifdef  SIGWINCH_HANDLER_BODY
-SIGWINCH_HANDLER_BODY
-#endif
 /* Print routines to handle variable size regs, etc.  */
 /* Temporary storage using circular buffer.  */
 #define NUMCELLS 16