Remove implementations from registry module docs
Removes mentions of the registry implementations from the top-level
Splinter registry documentation. These implementations could be excluded
in the future depending on which feature flags are enabled, and they are
not necessary to mention in the module-level documentation.
//! its builder, [`NodeBuilder`]), and the registry traits: [`RegistryReader`], [`RegistryWriter`],
//! and [`RwRegistry`].
//!
-//! The following registry implementations are provided by this module:
-//!
-//! * [`LocalYamlRegistry`] - A read/write registry that is backed by a local YAML file.
-//! * [`UnifiedRegistry`] - A read/write registry with a single read/write sub-registry and an
-//! arbitrary number of read-only sub-registries.
-//!
//! [`Node`]: struct.Node.html
//! [`NodeBuilder`]: struct.NodeBuilder.html
//! [`RegistryReader`]: trait.RegistryReader.html
//! [`RegistryWriter`]: trait.RegistryWriter.html
//! [`RwRegistry`]: trait.RwRegistry.html
-//! [`LocalYamlRegistry`]: struct.LocalYamlRegistry.html
-//! [`UnifiedRegistry`]: struct.UnifiedRegistry.html
mod error;
#[cfg(feature = "rest-api")]
