revert accessibility for custom picker (#643)

Author: M-i-k-e-l

src/components/picker/index.js

@@ -336,13 +336,7 @@ class Picker extends BaseComponent {
       const {value} = this.state;
       return (
         <View left>
-          <Button
-            {...this.getAccessibilityInfo()}
-            {...customPickerProps}
-            link
-            onPress={this.handlePickerOnPress}
-            testID={testID}
-          >
+          <Button {...customPickerProps} link onPress={this.handlePickerOnPress} testID={testID}>
             {renderPicker(value)}
           </Button>
           {this.renderExpandableModal()}