FAB-2015 Remove Version from CouchDB QueryResult

Motivation for this change:
Version is no longer required in the QueryResult structure.
This also keeps the CouchDB layer to be more generic, since the
CouchDB data layer is used by consumers other than Ledger.

- Remove Version from QueryResult struct in couchdb.go

- Previous changes in FAB1818 remove any reference to Version

- Remove 3 instances where Version is populated with development values

Change-Id: I9ac47e96b9530e23f6a31a075e71ba811e13cf05
Signed-off-by: Chris Elder <chris.elder@us.ibm.com>

core/ledger/util/couchdb/couchdb.go

@@ -35,7 +35,6 @@ import (
 	"strings"
 	"unicode/utf8"
 
-	"github.com/hyperledger/fabric/core/ledger/kvledger/txmgmt/version"
 	logging "github.com/op/go-logging"
 )
 
@@ -104,9 +103,8 @@ type DocID struct {
 
 //QueryResult is used for returning query results from CouchDB
 type QueryResult struct {
-	ID      string
-	Version *version.Height
-	Value   []byte
+	ID    string
+	Value []byte
 }
 
 //CouchConnectionDef contains parameters
@@ -713,15 +711,15 @@ func (dbclient *CouchDatabase) ReadDocRange(startKey, endKey string, limit, skip
 				return nil, err
 			}
 
-			var addDocument = &QueryResult{jsonDoc.ID, version.NewHeight(1, 1), binaryDocument}
+			var addDocument = &QueryResult{jsonDoc.ID, binaryDocument}
 
 			results = append(results, *addDocument)
 
 		} else {
 
 			logger.Debugf("Adding json docment for id: %s", jsonDoc.ID)
 
-			var addDocument = &QueryResult{jsonDoc.ID, version.NewHeight(1, 1), row.Doc}
+			var addDocument = &QueryResult{jsonDoc.ID, row.Doc}
 
 			results = append(results, *addDocument)
 
@@ -799,7 +797,7 @@ func (dbclient *CouchDatabase) QueryDocuments(query string, limit, skip int) (*[
 		logger.Debugf("Adding row to resultset: %s", row)
 
 		//TODO Replace the temporary NewHeight version when available
-		var addDocument = &QueryResult{jsonDoc.ID, version.NewHeight(1, 1), row}
+		var addDocument = &QueryResult{jsonDoc.ID, row}
 
 		results = append(results, *addDocument)