patch 8.2.1442: outdated references to the Mac Carbon GUI

Problem:    Outdated references to the Mac Carbon GUI.
Solution:   Remove or update references. (Yee Cheng Chin, closes #6703)
diff --git a/src/os_macosx.m b/src/os_macosx.m
index 0ac59b4..0299fe4 100644
--- a/src/os_macosx.m
+++ b/src/os_macosx.m
@@ -29,11 +29,8 @@
 
 /*
  * Clipboard support for the console.
- * Don't include this when building the GUI version, the functions in
- * gui_mac.c are used then.  TODO: remove those instead?
- * But for MacVim we do need these ones.
  */
-#if defined(FEAT_CLIPBOARD) && (!defined(FEAT_GUI_ENABLED))
+#if defined(FEAT_CLIPBOARD)
 
 /* Used to identify clipboard data copied from Vim. */