Remove the old and not well supported GTK 1 code. (James Vega)
diff --git a/src/gui.c b/src/gui.c
index 33f7844..a774893 100644
--- a/src/gui.c
+++ b/src/gui.c
@@ -2261,7 +2261,7 @@
 	    /* print the string so far if it's the last character or there is
 	     * a composing character. */
 	    if (i + cl >= len || (comping && i > start) || dowide
-#  if defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK)
+#  if defined(FEAT_GUI_X11)
 		    || (cn > 1
 #   ifdef FEAT_XFONTSET
 			/* No fontset: At least draw char after wide char at
@@ -2293,7 +2293,7 @@
 		    start += cl;
 		}
 
-#  if defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK)
+#  if defined(FEAT_GUI_X11)
 		/* No fontset: draw a space to fill the gap after a wide char
 		 * */
 		if (cn > 1 && (draw_flags & DRAW_TRANSP) == 0