FAB-11491 Inline getCodePackage

This function is only called in one place, and simply wraps and returns
an error, eliminating.

Change-Id: I43721bb6e742022e808f94d4d4c1fdcdf8fbf015
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>

Author: Jason Yellick

core/chaincode/runtime_launcher.go

@@ -46,9 +46,9 @@ func (r *RuntimeLauncher) Launch(ccci *ccprovider.ChaincodeContainerInfo) error
 		startFailCh = make(chan error, 1)
 		timeoutCh = time.NewTimer(r.StartupTimeout).C
 
-		codePackage, err := r.getCodePackage(ccci)
+		codePackage, err := r.PackageProvider.GetChaincodeCodePackage(ccci)
 		if err != nil {
-			return err
+			return errors.Wrap(err, "failed to get chaincode package")
 		}
 
 		go func() {
@@ -95,12 +95,3 @@ func (r *RuntimeLauncher) Launch(ccci *ccprovider.ChaincodeContainerInfo) error
 	chaincodeLogger.Debug("launch complete")
 	return err
 }
-
-func (r *RuntimeLauncher) getCodePackage(ccci *ccprovider.ChaincodeContainerInfo) ([]byte, error) {
-	codePackage, err := r.PackageProvider.GetChaincodeCodePackage(ccci)
-	if err != nil {
-		return nil, errors.Wrap(err, "failed to get chaincode package")
-	}
-
-	return codePackage, nil
-}