Small clean-up and pre-requisite for making

TABLE_SHARE a class.

Remove unused members in TABLE_SHARE.

sql/table.h

@@ -573,9 +573,7 @@ struct TABLE_SHARE
   key_map keys_for_keyread;
   ha_rows min_rows, max_rows;		/* create information */
   ulong   avg_row_length;		/* create information */
-  ulong   raid_chunksize;
   ulong   version, mysql_version;
-  ulong   timestamp_offset;		/* Set to offset+1 of record */
   ulong   reclength;			/* Recordlength */
 
   plugin_ref db_plugin;			/* storage engine plugin */
@@ -586,8 +584,6 @@ struct TABLE_SHARE
   }
   enum row_type row_type;		/* How rows are stored */
   enum tmp_table_type tmp_table;
-  enum enum_ha_unused unused1;
-  enum enum_ha_unused unused2;
 
   uint ref_count;                       /* How many TABLE objects uses this */
   uint blob_ptr_size;			/* 4 or 8 */
@@ -605,7 +601,6 @@ struct TABLE_SHARE
   uint db_create_options;		/* Create options from database */
   uint db_options_in_use;		/* Options in use */
   uint db_record_offset;		/* if HA_REC_IN_SEQ */
-  uint raid_type, raid_chunks;
   uint rowid_field_offset;		/* Field_nr +1 to rowid field */
   /* Index of auto-updated TIMESTAMP field in field array */
   uint primary_key;