[Slide] Remove Slide offset property from src and docs (#7808)

Author: gfpacheco

docs/src/pages/component-api/transitions/Slide.md

@@ -11,7 +11,6 @@
 | enterTransitionDuration | number | duration.enteringScreen | Duration of the animation when the element is entering. |
 | in | boolean |  | If `true`, show the component; triggers the enter or exit animation. |
 | leaveTransitionDuration | number | duration.leavingScreen | Duration of the animation when the element is exiting. |
-| offset | string |  | Slide in by a fixed number of pixels or %. |
 | onEnter | TransitionCallback |  | Callback fired before the component enters. |
 | onEntered | TransitionCallback |  | Callback fired when the component has entered. |
 | onEntering | TransitionCallback |  | Callback fired when the component is entering. |
@@ -20,4 +19,3 @@
 | onExiting | TransitionCallback |  | Callback fired when the component is exiting. |
 
 Any other properties supplied will be spread to the root element.
-

src/transitions/Slide.js

@@ -59,10 +59,6 @@ export type Props = {
    * Duration of the animation when the element is exiting.
    */
   leaveTransitionDuration?: number,
-  /**
-   * Slide in by a fixed number of pixels or %.
-   */
-  offset?: string,
   /**
    * Callback fired before the component enters.
    */
@@ -176,7 +172,6 @@ class Slide extends PureComponent<DefaultProps, AllProps, void> {
   render() {
     const {
       children,
-      offset,
       onEnter,
       onEntering,
       onExit,