Remove contract encoding debug (confirmed working) (#836)

* Remove contract encoding debug (confirmed working)

* Remove (now-unused) import

packages/types/src/ContractAbi.ts

@@ -4,7 +4,7 @@
 
 import { CodecArg, Constructor } from './types';
 
-import { assert, isNumber, isNull, isString, isUndefined, stringCamelCase, u8aToHex } from '@polkadot/util';
+import { assert, isNumber, isNull, isString, isUndefined, stringCamelCase } from '@polkadot/util';
 
 import Compact from './codec/Compact';
 import { createClass } from './codec/createType';
@@ -134,8 +134,6 @@ export default class ContractAbi implements Contract {
         }, { ...baseStruct })
       ).toU8a();
 
-      console.error('hexToU8a(encoded)', u8aToHex(u8a));
-
       return Compact.addLengthPrefix(u8a);
     };