fix cargo.toml

Author: Shubham8287

crates/lib/Cargo.toml

@@ -53,7 +53,6 @@ enum-map = { workspace = true, optional = true }
 # For the 'proptest' feature.
 proptest = { workspace = true, optional = true }
 proptest-derive = { workspace = true, optional = true }
-spacetimedb-data-structures.workspace = true
 
 [dev-dependencies]
 spacetimedb-sats = { path = "../sats", features = ["test"] }