Remove unnecessary flag

Author: mcamara

Cargo.toml

@@ -36,7 +36,7 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 
 # -- For features
-sea-query = { version = "0.31.0-rc.4", features = ["thread-safe", "backend-postgres"], optional = true }
+sea-query = { version = "0.31.0-rc.4", features = ["thread-safe"], optional = true }
 rusqlite = { version = "0.31", optional = true }
 
 [dev-dependencies]