remove most top-level vardecls (#23946)

code/modules/client/client_defines.dm

@@ -127,6 +127,9 @@
 	///A lazy list of atoms we've examined in the last RECENT_EXAMINE_MAX_WINDOW (default 2) seconds, so that we will call [/atom/proc/examine_more] instead of [/atom/proc/examine] on them when examining
 	var/list/recent_examines
 
+	/// When to next alert admins that mouse macro use was attempted
+	var/next_mouse_macro_warning
+
 /client/vv_edit_var(var_name, var_value)
 	switch(var_name)
 		// I know we will never be in a world where admins are editing client vars to let people bypass TOS