patch 8.1.0763: nobody is using the Sun Workshop support

Problem:    Nobody is using the Sun Workshop support.
Solution:   Remove the Workshop support.
diff --git a/src/globals.h b/src/globals.h
index 4a0c52c..645c936 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1218,10 +1218,9 @@
 #if defined(FEAT_BEVAL) && !defined(NO_X11_INCLUDES)
 EXTERN BalloonEval	*balloonEval INIT(= NULL);
 EXTERN int		balloonEvalForTerm INIT(= FALSE);
-# if defined(FEAT_NETBEANS_INTG) || defined(FEAT_SUN_WORKSHOP)
+# if defined(FEAT_NETBEANS_INTG)
 EXTERN int bevalServers INIT(= 0);
 #  define BEVAL_NETBEANS		0x01
-#  define BEVAL_WORKSHOP		0x02
 # endif
 #endif
 
@@ -1363,14 +1362,6 @@
 EXTERN int		need_cursor_line_redraw INIT(= FALSE);
 #endif
 
-#ifdef ALT_X_INPUT
-/* we need to be able to go into the dispatch loop while processing a command
- * received via alternate input. However, we don't want to process another
- * command until the first is completed.
- */
-EXTERN int	suppress_alternate_input INIT(= FALSE);
-#endif
-
 #ifdef USE_MCH_ERRMSG
 /* Grow array to collect error messages in until they can be displayed. */
 EXTERN garray_T error_ga