docs: Remove duplicate tower-sessions entry from ECOSYSTEM.md (#2733)

Author: arcstur

ECOSYSTEM.md

@@ -28,7 +28,6 @@ If your project isn't listed here and you would like it to be, please feel free
 - [aide](https://docs.rs/aide): Code-first Open API documentation generator with [axum integration](https://docs.rs/aide/latest/aide/axum/index.html).
 - [axum-typed-routing](https://docs.rs/axum-typed-routing/latest/axum_typed_routing/): Statically typed routing macros with OpenAPI generation using aide.
 - [axum-jsonschema](https://docs.rs/axum-jsonschema/): A `Json<T>` extractor that does JSON schema validation of requests.
-- [tower-sessions](https://docs.rs/tower-sessions): Cookie-based sessions.
 - [axum-login](https://docs.rs/axum-login): Session-based user authentication for axum.
 - [axum-csrf-sync-pattern](https://crates.io/crates/axum-csrf-sync-pattern): A middleware implementing CSRF STP for AJAX backends and API endpoints.
 - [axum-otel-metrics](https://github.com/ttys3/axum-otel-metrics/): A axum OpenTelemetry Metrics middleware with prometheus exporter supported.