Revert "feat-jan-op增加版本返回"

This reverts commit 1fe9959
返回版本信息有误，本地提交需要在提交callback里获取

Author: nie-design

lib/client/doc.js

@@ -583,7 +583,7 @@ Doc.prototype._otApply = function(op, source) {
         'Cannot apply op to uncreated document. ' + this.collection + '.' + this.id
       );
     }
-    var extra = {v: source ? this.version : op.v, serverTime: op.serverTime};
+
     // NB: If we need to add another argument to this event, we should consider
     // the fact that the 'op' event has op.src as its 3rd argument
     this.emit('before op batch', op.op, source);
@@ -621,7 +621,7 @@ Doc.prototype._otApply = function(op, source) {
         this.data = this.type.apply(this.data, componentOp.op);
         this.emit('op', componentOp.op, source, op.src);
       }
-      this.emit('op batch', op.op, source, extra);
+      this.emit('op batch', op.op, source);
       // Pop whatever was submitted since we started applying this op
       this._popApplyStack(stackLength);
       return;
@@ -638,7 +638,7 @@ Doc.prototype._otApply = function(op, source) {
     // For ops from other clients, this will be after the op has been
     // committed to the database and published
     this.emit('op', op.op, source, op.src);
-    this.emit('op batch', op.op, source, extra);
+    this.emit('op batch', op.op, source);
     return;
   }