Move the code of deleting mob data to the DeleteTableHandler.
Fix the compile error
refine the code.
Fix the issue in deleting tables.
Refine the code.
Merge remote-tracking branch 'origin/hbase-11339-core' into hbase-11339-core-snapshot
Merge remote-tracking branch 'origin/hbase-11339-core-snapshot' into hbase-11339-sweep-tool