Remove deprecated TableStore.delete alias in 0.9.0

[FelineStateMachine]

TableStore.delete became a @deprecated alias of TableStore.remove in #169 to standardize the mutation verb across TableStore, TableMutationStore, and the ledger vocabulary. The upcoming 0.8.0 release ships the alias as the one-release grace period.

For 0.9.0:

• Remove the delete(id) method from TableStore (package/runtime/table-store.ts) and its coverage in table-store_test.ts.
• Grep for remaining .delete( callers on table stores across package/, apps/reference, and docs/ (docs and the reference app already use remove as of Pre-release API surface pass: entry type closure, internal de-exports, shared-field seam, naming consistency #169; verify nothing regressed in the interim).
• Note the removal in the release notes.

Do not remove before 0.9.0: 0.8.0 is the deprecation window.