Remove defaultProps

Summary:
Changelog:
[Internal] - Remove defaultProps for SectionList

Reviewed By: kacieb

Differential Revision: D27630645

fbshipit-source-id: 81571fb5f90ea4e820c74781811b82f954f97396

Libraries/Lists/SectionList.js

@@ -116,12 +116,6 @@ export type Props<SectionT> = {|
   ...OptionalProps<SectionT>,
 |};
 
-const defaultProps = {
-  stickySectionHeadersEnabled: Platform.OS === 'ios',
-};
-
-type DefaultProps = typeof defaultProps;
-
 /**
  * A performant interface for rendering sectioned lists, supporting the most handy features:
  *
@@ -182,7 +176,6 @@ class SectionList<SectionT: SectionBase<any>> extends React.PureComponent<
   void,
 > {
   props: Props<SectionT>;
-  static defaultProps: DefaultProps = defaultProps;
 
   /**
    * Scrolls to the item at the specified `sectionIndex` and `itemIndex` (within the section)
@@ -245,9 +238,16 @@ class SectionList<SectionT: SectionBase<any>> extends React.PureComponent<
   }
 
   render(): React.Node {
+    const {
+      stickySectionHeadersEnabled: _stickySectionHeadersEnabled,
+      ...restProps
+    } = this.props;
+    const stickySectionHeadersEnabled =
+      _stickySectionHeadersEnabled ?? Platform.OS === 'ios';
     return (
       <VirtualizedSectionList
-        {...this.props}
+        {...restProps}
+        stickySectionHeadersEnabled={stickySectionHeadersEnabled}
         ref={this._captureRef}
         getItemCount={items => items.length}
         getItem={(items, index) => items[index]}