Reduce number of keywords for eventhubs service (#2193)

Author: LarryOsterman

sdk/eventhubs/azure_messaging_eventhubs/Cargo.toml

@@ -12,7 +12,7 @@ repository = "https://github.com/azure/azure-sdk-for-rust"
 homepage = "https://github.com/azure/azure-sdk-for-rust"
 documentation = "https://docs.rs/azure_messaging_eventhubs"
 
-keywords = ["sdk", "azure", "rest", "iot", "cloud", "eventhubs"]
+keywords = ["sdk", "azure", "messaging", "cloud", "eventhubs"]
 categories = ["api-bindings"]
 
 edition = "2021"