Strip down clap

Author: palfrey

Cargo.lock

@@ -9,7 +9,7 @@ odbc = "0.16"
 odbc-safe = "0.5"
 odbc-sys = { version= "0.8.2", features=["static"] }
 env_logger = "0.7"
-clap = "2.33"
+clap = { version = "2.33", default-features = false }
 failure = { version = "0.1", default-features = false }
 exitcode = "1.1"
 postgres = {version = "0.17", default-features = false }