Remove link to the spec

Author: wilzbach

changelog/core-memory-__delete.dd

@@ -1,7 +1,7 @@
 `core.memory.__delete` has been added
 
 $(REF __delete, core, memory) allows easy migration from the deprecated `delete`.
-`__delete` behaves exactly like $(LINK2 $(ROOT_DIR)spec/expression.html#delete_expressions, `delete`):
+`__delete` behaves exactly like `delete`:
 
 ---
 bool dtorCalled;