Removal of legacy permissions for predator (#7686)

# About the pull request

It removes access for legacy preds to play pred

# Explain why it's good for the game

It stops inactive people who are deWLed to playing pred and making me
look bad
I spoke to the pred senator (coolest guy) and he said its fine


# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog

:cl:
del: Removes access to pred for legacy WL holders
/:cl:

---------

Co-authored-by: forest2001 <[email protected]>

code/__DEFINES/mode.dm

@@ -193,7 +193,7 @@ GLOBAL_LIST_INIT(whitelist_hierarchy, list(WHITELIST_NORMAL, WHITELIST_COUNCIL,
 ///Old holders of YAUTJA_COUNCIL for 3 months
 #define WHITELIST_YAUTJA_COUNCIL_LEGACY (1<<3)
 #define WHITELIST_YAUTJA_LEADER (1<<4)
-#define WHITELIST_PREDATOR (WHITELIST_YAUTJA|WHITELIST_YAUTJA_LEGACY|WHITELIST_YAUTJA_COUNCIL|WHITELIST_YAUTJA_COUNCIL_LEGACY|WHITELIST_YAUTJA_LEADER)
+#define WHITELIST_PREDATOR (WHITELIST_YAUTJA|WHITELIST_YAUTJA_COUNCIL|WHITELIST_YAUTJA_LEADER)
 
 #define WHITELIST_COMMANDER (1<<5)
 #define WHITELIST_COMMANDER_COUNCIL (1<<6)