Revert the rest of the COMPAT_MODE changes (back to hrev52003.)

This reverts commit 458e758f37.
This reverts commit ce5eb94a82.
This reverts commit aac8d4c317.
This reverts commit c70cba914a.
This reverts commit 2ffbe7aaca
This reverts commit c6e120e2d2.

headers/private/kernel/util/syscall_args.h

@@ -23,18 +23,6 @@ copy_ref_var_from_user(T *user, T &kernel)
 	return user_memcpy(&kernel, user, sizeof(T));
 }
 
-
-template<typename T>
-inline
-status_t
-copy_ref_var_from_user(T *user, T &kernel, size_t size)
-{
-	if (size != sizeof(T))
-		return B_BAD_VALUE;
-	return copy_ref_var_from_user(user, kernel);
-}
-
-
 // copy_ref_var_to_user
 template<typename T>
 inline
@@ -47,17 +35,4 @@ copy_ref_var_to_user(T &kernel, T *user)
 }
 
 
-template<typename T>
-inline
-status_t
-copy_ref_var_to_user(T &kernel, T *user, size_t size)
-{
-	if (size > sizeof(T))
-		return B_BAD_VALUE;
-	if (!IS_USER_ADDRESS(user))
-		return B_BAD_ADDRESS;
-	return user_memcpy(user, &kernel, size);
-}
-
-
 #endif	// _SYSCALL_ARGS_H