patch 7.4.2048
Problem:    There is still code and help for unsupported systems.
Solution:   Remove the code and text. (Hirohito Higashi)
diff --git a/src/memline.c b/src/memline.c
index bf1e91e..f7c68b2 100644
--- a/src/memline.c
+++ b/src/memline.c
@@ -2038,7 +2038,7 @@
 }
 #endif
 
-#if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG))
+#if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG))
 static int process_still_running;
 #endif
 
@@ -2126,7 +2126,7 @@
 		{
 		    MSG_PUTS(_("\n        process ID: "));
 		    msg_outnum(char_to_long(b0.b0_pid));
-#if defined(UNIX) || defined(__EMX__)
+#if defined(UNIX)
 		    /* EMX kill() not working correctly, it seems */
 		    if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0)
 		    {
@@ -4445,7 +4445,7 @@
 		    }
 #endif
 
-#if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG))
+#if (defined(UNIX) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG))
 		    process_still_running = FALSE;
 #endif
 #ifdef FEAT_AUTOCMD
@@ -4497,13 +4497,13 @@
 				    name == NULL
 					?  (char_u *)_("Swap file already exists!")
 					: name,
-# if defined(UNIX) || defined(__EMX__) || defined(VMS)
+# if defined(UNIX) || defined(VMS)
 				    process_still_running
 					? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") :
 # endif
 					(char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL, FALSE);
 
-# if defined(UNIX) || defined(__EMX__) || defined(VMS)
+# if defined(UNIX) || defined(VMS)
 			if (process_still_running && choice >= 4)
 			    choice++;	/* Skip missing "Delete it" button */
 # endif