FAB-4454 Remove unused and duplicated imports

Change-Id: Ic93ace5411e91f93b491767e11d2dc8eb5304e71
Signed-off-by: Chris Murphy <chrism@fast.au.fujitsu.com>

Author: chrism28282828

src/main/java/org/hyperledger/fabric/sdk/Channel.java

@@ -68,8 +68,6 @@
 import org.hyperledger.fabric.protos.orderer.Ab.SeekInfo;
 import org.hyperledger.fabric.protos.orderer.Ab.SeekPosition;
 import org.hyperledger.fabric.protos.orderer.Ab.SeekSpecified;
-import org.hyperledger.fabric.protos.peer.Configuration.AnchorPeer;
-import org.hyperledger.fabric.protos.peer.Configuration.AnchorPeers;
 import org.hyperledger.fabric.protos.peer.FabricProposal;
 import org.hyperledger.fabric.protos.peer.FabricProposal.SignedProposal;
 import org.hyperledger.fabric.protos.peer.FabricProposalResponse;
@@ -104,12 +102,6 @@
 import org.hyperledger.fabric.sdk.transaction.UpgradeProposalBuilder;
 
 import static java.lang.String.format;
-import static org.hyperledger.fabric.protos.common.Common.HeaderType;
-import static org.hyperledger.fabric.protos.common.Common.SignatureHeader;
-import static org.hyperledger.fabric.protos.common.Common.Status;
-import static org.hyperledger.fabric.protos.common.Configtx.ConfigValue;
-import static org.hyperledger.fabric.protos.common.Policies.SignaturePolicy;
-import static org.hyperledger.fabric.protos.common.Policies.SignaturePolicyEnvelope;
 import static org.hyperledger.fabric.sdk.helper.Utils.checkGrpcUrl;
 import static org.hyperledger.fabric.sdk.helper.Utils.toHexString;
 import static org.hyperledger.fabric.sdk.transaction.ProtoUtils.createChannelHeader;