update crates keywords

Author: yehohanan7

lib/Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT"
 repository = "https://github.com/yehohanan7/neo4rs"
 documentation = "https://docs.rs/neo4rs"
 readme = "../README.md"
-keywords = ["neo4j", "rust", "bolt", "cypher", "driver", "graph"]
+keywords = ["neo4j", "rust", "bolt", "cypher", "driver"]
 categories = ["database", "network-programming", "asynchronous"]
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html