- Removed a couple of delete_* methods. - Refactored the remove method.
- Removed a couple of delete_* methods.
- Refactored the remove method.

james-monkeyshines/ensembl,Ensembl/ensembl,at7/ensembl,mjg17/ensembl,muffato/ensembl,at7/ensembl,Ensembl/ensembl,muffato/ensembl,james-monkeyshines/ensembl,danstaines/ensembl,Ensembl/ensembl,mjg17/ensembl,Ensembl/ensembl,danstaines/ensembl,muffato/ensembl,at7/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,willmclaren/ensembl,mjg17/ensembl,willmclaren/ensembl,danstaines/ensembl,muffato/ensembl,james-monkeyshines/ensembl,at7/ensembl