Merge pull request #177 from react-component/3.x

fix non-unique id

Author: afc163

src/TimePicker.jsx

@@ -22,7 +22,6 @@ class Picker extends Component {
     inputClassName: '',
     popupClassName: '',
     popupStyle: {},
-    id: '',
     align: {},
     defaultOpenValue: moment(),
     allowEmpty: true,

tests/__snapshots__/TimePicker.spec.jsx.snap

@@ -7,7 +7,6 @@ exports[`TimePicker allowEmpty cannot allow clear when disabled 1`] = `
   <input
     class="rc-time-picker-input"
     disabled=""
-    id=""
     type="text"
     value="12:57:58"
   />
@@ -23,7 +22,6 @@ exports[`TimePicker allowEmpty should allow clear 1`] = `
 >
   <input
     class="rc-time-picker-input"
-    id=""
     type="text"
     value="12:57:58"
   />