Delete ancient inoperable metadata

include/clasp/clbind/derivable.h

@@ -53,8 +53,6 @@ redirect its virtual functions to the Derivable<T> functions. */
   template <class Alien>
     class Derivable : public core::DerivableCxxObject_O, public Alien  {
   public:
-// All classes derived from Derivable must be put in the non-moving pool
-    struct metadata_gc_do_not_move {};
     typedef Derivable<Alien> DerivableType;
     typedef Alien AlienType;
   public:

include/clasp/core/hashTable.h

@@ -56,7 +56,6 @@ struct KeyValuePair {
 
   FORWARD(HashTable);
   class HashTable_O : public HashTableBase_O {
-    struct metadata_bootstrap_class {};
     friend T_sp cl__make_hash_table(T_sp test, Fixnum_sp size, Number_sp rehash_size, Real_sp orehash_threshold, Symbol_sp weakness, T_sp debug, T_sp thread_safe, T_sp hashf);
     friend class HashTableReadLock;
     friend class HashTableWriteLock;

include/clasp/core/hashTableBase.h

@@ -32,7 +32,6 @@ THE SOFTWARE.
 namespace core {
   FORWARD(HashTableBase);
   class HashTableBase_O : public General_O {
-    struct metadata_bootstrap_class {};
     LISP_ABSTRACT_CLASS(core, CorePkg, HashTableBase_O, "HashTableBase",core::General_O);
   HashTableBase_O() {};
   public:

include/clasp/core/symbol.h

@@ -222,10 +222,7 @@ class VariableCell_O : public General_O {
 
 FORWARD(Symbol);
 class Symbol_O : public General_O {
-  struct metadata_bootstrap_class {};
-  struct metadata_gc_do_not_move {};
-
- public:
+public:
   // This MUST match the layout for %symbol% in cmpintrinsics.lisp and the sanity check core__verify_symbol_layout
   SimpleString_sp _Name; // offset 8
   std::atomic<T_sp> _HomePackage; // offset=16 NIL or Package

include/clasp/gctools/gcweak.h

@@ -116,7 +116,6 @@ void safeRun(std::function<Proto> f) {
 namespace gctools {
 
 struct WeakObject {
-  struct metadata_always_fix_pointers_to_derived_classes;
 WeakObject() {};
 
   virtual void *dependentPtr() const { return NULL; };