Remove debug logs

The classes from the library should be less noisy

lib/contracts/contributor.js

@@ -49,7 +49,6 @@ class Contributor extends Base {
           contributorAttr.isCore,
         ];
 
-        console.log('[kredits] addContributor', ...contributor);
         return this.functions.addContributor(...contributor);
       });
   }

lib/contracts/operator.js

@@ -49,7 +49,6 @@ class Operator extends Base {
           ipfsHashAttr.hashSize,
         ];
 
-        console.log('[kredits] addProposal', ...proposal);
         return this.functions.addProposal(...proposal);
       });
   }