clean cargo.toml

Cargo.toml

@@ -328,10 +328,6 @@ name = "lead"
 path = "example/lead.rs"
 required-features = ["node"]
 
-[[example]]
-name = "lessthan"
-path = "example/lessthan.rs"
-required-features = ["node"]
 
 [[example]]
 name = "crypsinous"