message: Deleted unused import
diff: package org.hyperledger.indy.sdk.wallet;
  -import java.util.HashMap;
  -import java.util.HashSet;
  -import java.util.Map;
  import java.util.concurrent.CompletableFuture;
  -import org.hyperledger.indy.sdk.ErrorCode;
  import org.hyperledger.indy.sdk.IndyException;
  import org.hyperledger.indy.sdk.IndyJava;
  import org.hyperledger.indy.sdk.LibIndy;
  