[FABCJ-214] - Java chaincode gRPC server

remove unused import

Signed-off-by: Oleksandr Yamkovyi <oleksandr.yamkoviy@intellecteu.com>

Author: oyamkovyi

fabric-chaincode-shim/src/test/java/org/hyperledger/fabric/shim/impl/ChaincodeSupportClientTest.java

@@ -12,7 +12,6 @@
 import org.hyperledger.fabric.protos.peer.ChaincodeShim;
 import org.hyperledger.fabric.shim.ChaincodeBase;
 import org.hyperledger.fabric.shim.chaincode.EmptyChaincode;
-import org.junit.After;
 import org.junit.Rule;
 import org.junit.contrib.java.lang.system.EnvironmentVariables;
 import org.junit.jupiter.api.Assertions;