patch 8.1.1514: MS-Windows: wrong shell command with ! in 'guioptions'

Problem:    MS-Windows: wrong shell command with ! in 'guioptions'.
Solution:   Do not check for ! in 'guioptions' when applying 'shellxquote'.
            (Yasuhiro Matsumoto, closes #4519)
diff --git a/src/misc2.c b/src/misc2.c
index 47b3c72..2ac7f5e 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -3251,15 +3251,7 @@
 	/* The external command may update a tags file, clear cached tags. */
 	tag_freematch();
 
-	if (cmd == NULL || *p_sxq == NUL
-#if defined(FEAT_GUI_MSWIN) && defined(FEAT_TERMINAL)
-		|| (
-# ifdef VIMDLL
-		    gui.in_use &&
-# endif
-		    vim_strchr(p_go, GO_TERMINAL) != NULL)
-#endif
-		)
+	if (cmd == NULL || *p_sxq == NUL)
 	    retval = mch_call_shell(cmd, opt);
 	else
 	{